157907738 has 8 divisors (see below), whose sum is σ = 244502400. Its totient is φ = 76406940.

The previous prime is 157907731. The next prime is 157907741. The reversal of 157907738 is 837709751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 157907692 and 157907701.

It is not an unprimeable number, because it can be changed into a prime (157907731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1273388 + ... + 1273511.

It is an arithmetic number, because the mean of its divisors is an integer number (30562800).

Almost surely, 2^157907738 is an apocalyptic number.

157907738 is a deficient number, since it is larger than the sum of its proper divisors (86594662).

157907738 is a wasteful number, since it uses less digits than its factorization.

157907738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2546932.

The product of its (nonzero) digits is 370440, while the sum is 47.

The square root of 157907738 is about 12566.1345687526. The cubic root of 157907738 is about 540.5067693522.

The spelling of 157907738 in words is "one hundred fifty-seven million, nine hundred seven thousand, seven hundred thirty-eight".