157718634 has 16 divisors (see below), whose sum is σ = 316265472. Its totient is φ = 52434848.

The previous prime is 157718621. The next prime is 157718657. The reversal of 157718634 is 436817751.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 32019 + ... + 36614.

It is an arithmetic number, because the mean of its divisors is an integer number (19766592).

Almost surely, 2^157718634 is an apocalyptic number.

157718634 is an abundant number, since it is smaller than the sum of its proper divisors (158546838).

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

157718634 is a wasteful number, since it uses less digits than its factorization.

157718634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69021.

The product of its digits is 141120, while the sum is 42.

The square root of 157718634 is about 12558.6079642610. The cubic root of 157718634 is about 540.2909200589.

The spelling of 157718634 in words is "one hundred fifty-seven million, seven hundred eighteen thousand, six hundred thirty-four".