189708984 has 48 divisors (see below), whose sum is σ = 544021920. Its totient is φ = 59516160.

The previous prime is 189708979. The next prime is 189708997. The reversal of 189708984 is 489807981.

It is a super-2 number, since 2×189708984² = 71978997220624512, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189708984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76272 + ... + 78719.

It is an arithmetic number, because the mean of its divisors is an integer number (11333790).

Almost surely, 2^189708984 is an apocalyptic number.

It is an amenable number.

189708984 is an abundant number, since it is smaller than the sum of its proper divisors (354312936).

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

189708984 is a wasteful number, since it uses less digits than its factorization.

189708984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155020 (or 155013 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 189708984 is about 13773.4884470130. The cubic root of 189708984 is about 574.5960454510.

The spelling of 189708984 in words is "one hundred eighty-nine million, seven hundred eight thousand, nine hundred eighty-four".