157238194 has 4 divisors (see below), whose sum is σ = 235857294. Its totient is φ = 78619096.

The previous prime is 157238183. The next prime is 157238209. The reversal of 157238194 is 491832751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 108056025 + 49182169 = 10395^2 + 7013^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39309547 + ... + 39309550.

Almost surely, 2^157238194 is an apocalyptic number.

157238194 is a deficient number, since it is larger than the sum of its proper divisors (78619100).

157238194 is an equidigital number, since it uses as much as digits as its factorization.

157238194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78619099.

The product of its digits is 60480, while the sum is 40.

The square root of 157238194 is about 12539.4654591015. The cubic root of 157238194 is about 539.7417535178.

The spelling of 157238194 in words is "one hundred fifty-seven million, two hundred thirty-eight thousand, one hundred ninety-four".