157238193 has 16 divisors (see below), whose sum is σ = 239855616. Its totient is φ = 89754960.

The previous prime is 157238183. The next prime is 157238209. The reversal of 157238193 is 391832751.

It is not a de Polignac number, because 157238193 - 2⁸ = 157237937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (157238153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19480 + ... + 26342.

It is an arithmetic number, because the mean of its divisors is an integer number (14990976).

Almost surely, 2^157238193 is an apocalyptic number.

It is an amenable number.

157238193 is a deficient number, since it is larger than the sum of its proper divisors (82617423).

157238193 is a wasteful number, since it uses less digits than its factorization.

157238193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7964.

The product of its digits is 45360, while the sum is 39.

The square root of 157238193 is about 12539.4654192274. The cubic root of 157238193 is about 539.7417523736.

The spelling of 157238193 in words is "one hundred fifty-seven million, two hundred thirty-eight thousand, one hundred ninety-three".