157593138 has 16 divisors (see below), whose sum is σ = 323705280. Its totient is φ = 51111216.

The previous prime is 157593109. The next prime is 157593143. The reversal of 157593138 is 831395751.

It is a self number, because there is not a number n which added to its sum of digits gives 157593138.

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, 354718 + ... + 355161.

It is an arithmetic number, because the mean of its divisors is an integer number (20231580).

Almost surely, 2^157593138 is an apocalyptic number.

157593138 is an abundant number, since it is smaller than the sum of its proper divisors (166112142).

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

157593138 is a wasteful number, since it uses less digits than its factorization.

157593138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709921.

The product of its digits is 113400, while the sum is 42.

The square root of 157593138 is about 12553.6105563300. The cubic root of 157593138 is about 540.1475796909.

The spelling of 157593138 in words is "one hundred fifty-seven million, five hundred ninety-three thousand, one hundred thirty-eight".