191375157 has 16 divisors (see below), whose sum is σ = 268369920. Its totient is φ = 121069872.

The previous prime is 191375143. The next prime is 191375159. The reversal of 191375157 is 751573191.

191375157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 191375157 - 2⁴ = 191375141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191375159) 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, 2157 + ... + 19682.

It is an arithmetic number, because the mean of its divisors is an integer number (16773120).

Almost surely, 2^191375157 is an apocalyptic number.

It is an amenable number.

191375157 is a deficient number, since it is larger than the sum of its proper divisors (76994763).

191375157 is a wasteful number, since it uses less digits than its factorization.

191375157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21992.

The product of its digits is 33075, while the sum is 39.

The square root of 191375157 is about 13833.8410067486. The cubic root of 191375157 is about 576.2733288755.

The spelling of 191375157 in words is "one hundred ninety-one million, three hundred seventy-five thousand, one hundred fifty-seven".