189676487 has 32 divisors (see below), whose sum is σ = 268101120. Its totient is φ = 129237120.

The previous prime is 189676477. The next prime is 189676499. The reversal of 189676487 is 784676981.

It is a cyclic number.

It is not a de Polignac number, because 189676487 - 2⁴ = 189676471 is a prime.

It is a super-2 number, since 2×189676487² = 71954339441322338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189676427) 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 31 ways as a sum of consecutive naturals, for example, 14033 + ... + 24005.

It is an arithmetic number, because the mean of its divisors is an integer number (8378160).

Almost surely, 2^189676487 is an apocalyptic number.

189676487 is a deficient number, since it is larger than the sum of its proper divisors (78424633).

189676487 is a wasteful number, since it uses less digits than its factorization.

189676487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10023.

The product of its digits is 4064256, while the sum is 56.

The square root of 189676487 is about 13772.3087026105. The cubic root of 189676487 is about 574.5632342936.

It can be divided in two parts, 189 and 676487, that added together give a palindrome (676676).

The spelling of 189676487 in words is "one hundred eighty-nine million, six hundred seventy-six thousand, four hundred eighty-seven".