157864518 has 32 divisors (see below), whose sum is σ = 400926720. Its totient is φ = 45104040.

The previous prime is 157864513. The next prime is 157864541. The reversal of 157864518 is 815468751.

157864518 is a `hidden beast` number, since 1 + 5 + 78 + 64 + 518 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157864513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208438 + ... + 209193.

It is an arithmetic number, because the mean of its divisors is an integer number (12528960).

Almost surely, 2^157864518 is an apocalyptic number.

157864518 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157864518 is an abundant number, since it is smaller than the sum of its proper divisors (243062202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

157864518 is a wasteful number, since it uses less digits than its factorization.

157864518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417649 (or 417643 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 157864518 is about 12564.4147496014. The cubic root of 157864518 is about 540.4574518741.

The spelling of 157864518 in words is "one hundred fifty-seven million, eight hundred sixty-four thousand, five hundred eighteen".