157138758 has 64 divisors (see below), whose sum is σ = 401280000. Its totient is φ = 44649792.

The previous prime is 157138747. The next prime is 157138763. The reversal of 157138758 is 857831751.

157138758 is a `hidden beast` number, since 1 + 571 + 3 + 8 + 75 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74178 + ... + 76266.

It is an arithmetic number, because the mean of its divisors is an integer number (6270000).

Almost surely, 2^157138758 is an apocalyptic number.

157138758 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 157138758, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200640000).

157138758 is an abundant number, since it is smaller than the sum of its proper divisors (244141242).

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

157138758 is a wasteful number, since it uses less digits than its factorization.

157138758 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2306 (or 2300 counting only the distinct ones).

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

The square root of 157138758 is about 12535.4999102549. The cubic root of 157138758 is about 539.6279536048.

The spelling of 157138758 in words is "one hundred fifty-seven million, one hundred thirty-eight thousand, seven hundred fifty-eight".