189437087 has 24 divisors (see below), whose sum is σ = 233107200. Its totient is φ = 153071856.

The previous prime is 189437081. The next prime is 189437089. The reversal of 189437087 is 780734981.

It is not a de Polignac number, because 189437087 - 2¹⁰ = 189436063 is a prime.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189437081) 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, 263114 + ... + 263832.

It is an arithmetic number, because the mean of its divisors is an integer number (9712800).

Almost surely, 2^189437087 is an apocalyptic number.

189437087 is a deficient number, since it is larger than the sum of its proper divisors (43670113).

189437087 is a wasteful number, since it uses less digits than its factorization.

189437087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035 (or 1028 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 189437087 is about 13763.6146051828. The cubic root of 189437087 is about 574.3214043743.

The spelling of 189437087 in words is "one hundred eighty-nine million, four hundred thirty-seven thousand, eighty-seven".