189477964 has 12 divisors (see below), whose sum is σ = 357093184. Its totient is φ = 87451344.

The previous prime is 189477947. The next prime is 189477973. The reversal of 189477964 is 469774981.

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, 1821852 + ... + 1821955.

Almost surely, 2^189477964 is an apocalyptic number.

It is an amenable number.

189477964 is a deficient number, since it is larger than the sum of its proper divisors (167615220).

189477964 is a wasteful number, since it uses less digits than its factorization.

189477964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643824 (or 3643822 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 55.

The square root of 189477964 is about 13765.0994911043. The cubic root of 189477964 is about 574.3627106958.

The spelling of 189477964 in words is "one hundred eighty-nine million, four hundred seventy-seven thousand, nine hundred sixty-four".