157403538 has 24 divisors (see below), whose sum is σ = 341308188. Its totient is φ = 52426752.

The previous prime is 157403509. The next prime is 157403539. The reversal of 157403538 is 835304751.

157403538 is digitally balanced in base 3, 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 137663289 + 19740249 = 11733^2 + 4443^2 .

It is not an unprimeable number, because it can be changed into a prime (157403539) 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, 27970 + ... + 33122.

Almost surely, 2^157403538 is an apocalyptic number.

157403538 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

157403538 is an abundant number, since it is smaller than the sum of its proper divisors (183904650).

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

157403538 is a wasteful number, since it uses less digits than its factorization.

157403538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6858 (or 6855 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 157403538 is about 12546.0566713211. The cubic root of 157403538 is about 539.9308759256.

The spelling of 157403538 in words is "one hundred fifty-seven million, four hundred three thousand, five hundred thirty-eight".