157198538 has 16 divisors (see below), whose sum is σ = 274052160. Its totient is φ = 66228576.

The previous prime is 157198523. The next prime is 157198543. The reversal of 157198538 is 835891751.

It is a happy number.

157198538 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×157198538³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 157198492 and 157198501.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94331 + ... + 95982.

It is an arithmetic number, because the mean of its divisors is an integer number (17128260).

Almost surely, 2^157198538 is an apocalyptic number.

157198538 is a deficient number, since it is larger than the sum of its proper divisors (116853622).

157198538 is a wasteful number, since it uses less digits than its factorization.

157198538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190381.

The product of its digits is 302400, while the sum is 47.

The square root of 157198538 is about 12537.8841117630. The cubic root of 157198538 is about 539.6963748091.

The spelling of 157198538 in words is "one hundred fifty-seven million, one hundred ninety-eight thousand, five hundred thirty-eight".