1630140733 has 4 divisors (see below), whose sum is σ = 1755536188. Its totient is φ = 1504745280.

The previous prime is 1630140713. The next prime is 1630140791. The reversal of 1630140733 is 3370410361.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 229734649 + 1400406084 = 15157^2 + 37422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1630140733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1630140713) 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 3 ways as a sum of consecutive naturals, for example, 62697708 + ... + 62697733.

It is an arithmetic number, because the mean of its divisors is an integer number (438884047).

Almost surely, 2^1630140733 is an apocalyptic number.

1630140733 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1630140733 is a deficient number, since it is larger than the sum of its proper divisors (125395455).

1630140733 is a wasteful number, since it uses less digits than its factorization.

1630140733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125395454.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 1630140733 is about 40375.0013374613. The cubic root of 1630140733 is about 1176.9057910099.

The spelling of 1630140733 in words is "one billion, six hundred thirty million, one hundred forty thousand, seven hundred thirty-three".