157518738 has 24 divisors (see below), whose sum is σ = 367544268. Its totient is φ = 48467232.

The previous prime is 157518737. The next prime is 157518763. The reversal of 157518738 is 837815751.

157518738 is a `hidden beast` number, since 1 + 575 + 1 + 8 + 73 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 153586449 + 3932289 = 12393^2 + 1983^2 .

It is a super-2 number, since 2×157518738² = 49624305642225288, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 157518693 and 157518702.

It is not an unprimeable number, because it can be changed into a prime (157518733) 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 11 ways as a sum of consecutive naturals, for example, 336345 + ... + 336812.

Almost surely, 2^157518738 is an apocalyptic number.

157518738 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157518738 is an abundant number, since it is smaller than the sum of its proper divisors (210025530).

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

157518738 is a wasteful number, since it uses less digits than its factorization.

157518738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 673178 (or 673175 counting only the distinct ones).

The product of its digits is 235200, while the sum is 45.

The square root of 157518738 is about 12550.6469155976. The cubic root of 157518738 is about 540.0625647674.

The spelling of 157518738 in words is "one hundred fifty-seven million, five hundred eighteen thousand, seven hundred thirty-eight".