189667868 has 12 divisors (see below), whose sum is σ = 357451080. Its totient is φ = 87538992.

The previous prime is 189667837. The next prime is 189667871. The reversal of 189667868 is 868766981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1823678 + ... + 1823781.

It is an arithmetic number, because the mean of its divisors is an integer number (29787590).

Almost surely, 2^189667868 is an apocalyptic number.

It is an amenable number.

189667868 is a deficient number, since it is larger than the sum of its proper divisors (167783212).

189667868 is a wasteful number, since it uses less digits than its factorization.

189667868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647476 (or 3647474 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 59.

The square root of 189667868 is about 13771.9957885558. The cubic root of 189667868 is about 574.5545313425.

The spelling of 189667868 in words is "one hundred eighty-nine million, six hundred sixty-seven thousand, eight hundred sixty-eight".