189855996 has 24 divisors (see below), whose sum is σ = 483270144. Its totient is φ = 57532080.

The previous prime is 189855989. The next prime is 189856003. The reversal of 189855996 is 699558981.

It is an interprime number because it is at equal distance from previous prime (189855989) and next prime (189856003).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 719020 + ... + 719283.

It is an arithmetic number, because the mean of its divisors is an integer number (20136256).

Almost surely, 2^189855996 is an apocalyptic number.

It is an amenable number.

189855996 is an abundant number, since it is smaller than the sum of its proper divisors (293414148).

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

189855996 is a wasteful number, since it uses less digits than its factorization.

189855996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438321 (or 1438319 counting only the distinct ones).

The product of its digits is 6998400, while the sum is 60.

The square root of 189855996 is about 13778.8241878616. The cubic root of 189855996 is about 574.7444318570.

The spelling of 189855996 in words is "one hundred eighty-nine million, eight hundred fifty-five thousand, nine hundred ninety-six".