189287937 has 24 divisors (see below), whose sum is σ = 288354560. Its totient is φ = 119322720.

The previous prime is 189287933. The next prime is 189287981. The reversal of 189287937 is 739782981.

It is not a de Polignac number, because 189287937 - 2² = 189287933 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189287933) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 168903 + ... + 170019.

Almost surely, 2^189287937 is an apocalyptic number.

It is an amenable number.

189287937 is a deficient number, since it is larger than the sum of its proper divisors (99066623).

189287937 is a wasteful number, since it uses less digits than its factorization.

189287937 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2130 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 189287937 is about 13758.1952668219. The cubic root of 189287937 is about 574.1706374721.

The spelling of 189287937 in words is "one hundred eighty-nine million, two hundred eighty-seven thousand, nine hundred thirty-seven".