1490961645 has 12 divisors (see below), whose sum is σ = 2584333596. Its totient is φ = 795179520.

The previous prime is 1490961643. The next prime is 1490961671. The reversal of 1490961645 is 5461690941.

It is a happy number.

1490961645 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 590781636 + 900180009 = 24306^2 + 30003^2 .

It is not a de Polignac number, because 1490961645 - 2¹ = 1490961643 is a prime.

It is a super-3 number, since 3×1490961645³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 33132481 = 1490961645 / (1 + 4 + 9 + 0 + 9 + 6 + 1 + 6 + 4 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 1490961645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1490961643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16566196 + ... + 16566285.

It is an arithmetic number, because the mean of its divisors is an integer number (215361133).

Almost surely, 2^1490961645 is an apocalyptic number.

1490961645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1490961645 is a deficient number, since it is larger than the sum of its proper divisors (1093371951).

1490961645 is a wasteful number, since it uses less digits than its factorization.

1490961645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33132492 (or 33132489 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 1490961645 is about 38612.9724962997. The cubic root of 1490961645 is about 1142.4104237987.

The spelling of 1490961645 in words is "one billion, four hundred ninety million, nine hundred sixty-one thousand, six hundred forty-five".