189524157 has 4 divisors (see below), whose sum is σ = 252698880. Its totient is φ = 126349436.

The previous prime is 189524147. The next prime is 189524161. The reversal of 189524157 is 751425981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189524157 - 2⁴ = 189524141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189524147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31587357 + ... + 31587362.

It is an arithmetic number, because the mean of its divisors is an integer number (63174720).

Almost surely, 2^189524157 is an apocalyptic number.

It is an amenable number.

189524157 is a deficient number, since it is larger than the sum of its proper divisors (63174723).

189524157 is an equidigital number, since it uses as much as digits as its factorization.

189524157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63174722.

The product of its digits is 100800, while the sum is 42.

The square root of 189524157 is about 13766.7772917266. Note that the first 3 decimals coincide. The cubic root of 189524157 is about 574.4093817006.

The spelling of 189524157 in words is "one hundred eighty-nine million, five hundred twenty-four thousand, one hundred fifty-seven".