189018672 has 80 divisors (see below), whose sum is σ = 498634752. Its totient is φ = 61689600.

The previous prime is 189018667. The next prime is 189018703. The reversal of 189018672 is 276810981.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 615543 + ... + 615849.

Almost surely, 2^189018672 is an apocalyptic number.

189018672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189018672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249317376).

189018672 is an abundant number, since it is smaller than the sum of its proper divisors (309616080).

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

189018672 is a wasteful number, since it uses less digits than its factorization.

189018672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546 (or 540 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 42.

The square root of 189018672 is about 13748.4061621702. The cubic root of 189018672 is about 573.8982527549.

The spelling of 189018672 in words is "one hundred eighty-nine million, eighteen thousand, six hundred seventy-two".