1657310913 has 6 divisors (see below), whose sum is σ = 2393893554. Its totient is φ = 1104873936.

The previous prime is 1657310903. The next prime is 1657310927. The reversal of 1657310913 is 3190137561.

It can be written as a sum of positive squares in only one way, i.e., 1406025009 + 251285904 = 37497^2 + 15852^2 .

It is not a de Polignac number, because 1657310913 - 2⁵ = 1657310881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1657310903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 92072820 + ... + 92072837.

It is an arithmetic number, because the mean of its divisors is an integer number (398982259).

Almost surely, 2^1657310913 is an apocalyptic number.

It is an amenable number.

1657310913 is a deficient number, since it is larger than the sum of its proper divisors (736582641).

1657310913 is a wasteful number, since it uses less digits than its factorization.

1657310913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184145663 (or 184145660 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 1657310913 is about 40710.0836771432. The cubic root of 1657310913 is about 1183.4084428597.

The spelling of 1657310913 in words is "one billion, six hundred fifty-seven million, three hundred ten thousand, nine hundred thirteen".