189356080 has 40 divisors (see below), whose sum is σ = 455439600. Its totient is φ = 73129728.

The previous prime is 189356059. The next prime is 189356099. The reversal of 189356080 is 80653981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38490 + ... + 43129.

It is an arithmetic number, because the mean of its divisors is an integer number (11385990).

Almost surely, 2^189356080 is an apocalyptic number.

189356080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189356080 is an abundant number, since it is smaller than the sum of its proper divisors (266083520).

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

189356080 is a wasteful number, since it uses less digits than its factorization.

189356080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81661 (or 81655 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 189356080 is about 13760.6714952432. The cubic root of 189356080 is about 574.2395290178.

The spelling of 189356080 in words is "one hundred eighty-nine million, three hundred fifty-six thousand, eighty".