157808613 has 16 divisors (see below), whose sum is σ = 215732160. Its totient is φ = 102570624.

The previous prime is 157808611. The next prime is 157808627. The reversal of 157808613 is 316808751.

It is not a de Polignac number, because 157808613 - 2¹ = 157808611 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157808611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22873 + ... + 28961.

It is an arithmetic number, because the mean of its divisors is an integer number (13483260).

Almost surely, 2^157808613 is an apocalyptic number.

It is an amenable number.

157808613 is a deficient number, since it is larger than the sum of its proper divisors (57923547).

157808613 is a wasteful number, since it uses less digits than its factorization.

157808613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6308.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 157808613 is about 12562.1898170661. The cubic root of 157808613 is about 540.3936464424.

The spelling of 157808613 in words is "one hundred fifty-seven million, eight hundred eight thousand, six hundred thirteen".