189381792 has 48 divisors (see below), whose sum is σ = 497865312. Its totient is φ = 63033600.

The previous prime is 189381769. The next prime is 189381811. The reversal of 189381792 is 297183981.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×189381792² = 71730926282262528, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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 7 ways as a sum of consecutive naturals, for example, 99958 + ... + 101834.

It is an arithmetic number, because the mean of its divisors is an integer number (10372194).

Almost surely, 2^189381792 is an apocalyptic number.

189381792 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189381792 is an abundant number, since it is smaller than the sum of its proper divisors (308483520).

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

189381792 is a wasteful number, since it uses less digits than its factorization.

189381792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941 (or 2933 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 189381792 is about 13761.6057202639. The cubic root of 189381792 is about 574.2655191673.

The spelling of 189381792 in words is "one hundred eighty-nine million, three hundred eighty-one thousand, seven hundred ninety-two".