189157727 has 32 divisors (see below), whose sum is σ = 224308224. Its totient is φ = 159081120.

The previous prime is 189157699. The next prime is 189157739. The reversal of 189157727 is 727751981.

It is not a de Polignac number, because 189157727 - 2⁸ = 189157471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189157777) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1132598 + ... + 1132764.

It is an arithmetic number, because the mean of its divisors is an integer number (7009632).

Almost surely, 2^189157727 is an apocalyptic number.

189157727 is a deficient number, since it is larger than the sum of its proper divisors (35150497).

189157727 is a wasteful number, since it uses less digits than its factorization.

189157727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 260 (or 238 counting only the distinct ones).

The product of its digits is 246960, while the sum is 47.

The square root of 189157727 is about 13753.4623640740. The cubic root of 189157727 is about 574.0389511298.

The spelling of 189157727 in words is "one hundred eighty-nine million, one hundred fifty-seven thousand, seven hundred twenty-seven".