189131424 has 24 divisors (see below), whose sum is σ = 496470240. Its totient is φ = 63043776.

The previous prime is 189131413. The next prime is 189131471. The reversal of 189131424 is 424131981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

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, 984964 + ... + 985155.

It is an arithmetic number, because the mean of its divisors is an integer number (20686260).

Almost surely, 2^189131424 is an apocalyptic number.

It is an amenable number.

189131424 is an abundant number, since it is smaller than the sum of its proper divisors (307338816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189131424 is a wasteful number, since it uses less digits than its factorization.

189131424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970132 (or 1970124 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 189131424 is about 13752.5060988898. The cubic root of 189131424 is about 574.0123425658.

The spelling of 189131424 in words is "one hundred eighty-nine million, one hundred thirty-one thousand, four hundred twenty-four".