1330644485 has 16 divisors (see below), whose sum is σ = 1697307696. Its totient is φ = 997982208.

The previous prime is 1330644481. The next prime is 1330644517. The reversal of 1330644485 is 5844460331.

It is a happy number.

It is a Cunningham number, because it is equal to 36478²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 1094116 + 1329550369 = 1046^2 + 36463^2 .

It is a cyclic number.

It is not a de Polignac number, because 1330644485 - 2² = 1330644481 is a prime.

It is a super-2 number, since 2×1330644485² = 3541229490921830450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330644481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8612 + ... + 52301.

It is an arithmetic number, because the mean of its divisors is an integer number (106081731).

Almost surely, 2^1330644485 is an apocalyptic number.

It is an amenable number.

1330644485 is a deficient number, since it is larger than the sum of its proper divisors (366663211).

1330644485 is a wasteful number, since it uses less digits than its factorization.

1330644485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61192.

The product of its (nonzero) digits is 138240, while the sum is 38.

The square root of 1330644485 is about 36478.0000137069. Note that the first 4 decimals coincide. The cubic root of 1330644485 is about 1099.9020532623.

The spelling of 1330644485 in words is "one billion, three hundred thirty million, six hundred forty-four thousand, four hundred eighty-five".