189804012 has 24 divisors (see below), whose sum is σ = 443115456. Its totient is φ = 63233808.

The previous prime is 189803987. The next prime is 189804019. The reversal of 189804012 is 210408981.

189804012 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×189804012² = 72051125942592288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189804019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29563 + ... + 35405.

It is an arithmetic number, because the mean of its divisors is an integer number (18463144).

Almost surely, 2^189804012 is an apocalyptic number.

189804012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

189804012 is an abundant number, since it is smaller than the sum of its proper divisors (253311444).

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

189804012 is a wasteful number, since it uses less digits than its factorization.

189804012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8557 (or 8555 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 189804012 is about 13776.9376858575. The cubic root of 189804012 is about 574.6919706189.

The spelling of 189804012 in words is "one hundred eighty-nine million, eight hundred four thousand, twelve".