157907493 has 12 divisors (see below), whose sum is σ = 228746700. Its totient is φ = 104967936.

The previous prime is 157907483. The next prime is 157907501. The reversal of 157907493 is 394709751.

157907493 is a `hidden beast` number, since 1 + 579 + 0 + 74 + 9 + 3 = 666.

157907493 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 107184609 + 50722884 = 10353^2 + 7122^2 .

It is not a de Polignac number, because 157907493 - 2²⁰ = 156858917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157907483) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21996 + ... + 28277.

It is an arithmetic number, because the mean of its divisors is an integer number (19062225).

Almost surely, 2^157907493 is an apocalyptic number.

It is an amenable number.

157907493 is a deficient number, since it is larger than the sum of its proper divisors (70839207).

157907493 is a wasteful number, since it uses less digits than its factorization.

157907493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50628 (or 50625 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 157907493 is about 12566.1248203255. The cubic root of 157907493 is about 540.5064898129.

The spelling of 157907493 in words is "one hundred fifty-seven million, nine hundred seven thousand, four hundred ninety-three".