189686937 has 32 divisors (see below), whose sum is σ = 294589440. Its totient is φ = 107352000.

The previous prime is 189686873. The next prime is 189686953. The reversal of 189686937 is 739686981.

189686937 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 189686937 - 2⁶ = 189686873 is a prime.

It is a super-3 number, since 3×189686937³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (189686137) 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, 42387 + ... + 46647.

It is an arithmetic number, because the mean of its divisors is an integer number (9205920).

Almost surely, 2^189686937 is an apocalyptic number.

It is an amenable number.

189686937 is a deficient number, since it is larger than the sum of its proper divisors (104902503).

189686937 is a wasteful number, since it uses less digits than its factorization.

189686937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4365.

The product of its digits is 3919104, while the sum is 57.

The square root of 189686937 is about 13772.6880818524. The cubic root of 189686937 is about 574.5737857253.

The spelling of 189686937 in words is "one hundred eighty-nine million, six hundred eighty-six thousand, nine hundred thirty-seven".