189982984 has 8 divisors (see below), whose sum is σ = 356218110. Its totient is φ = 94991488.

The previous prime is 189982981. The next prime is 189982993. The reversal of 189982984 is 489289981.

It can be written as a sum of positive squares in only one way, i.e., 133402500 + 56580484 = 11550^2 + 7522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (189982981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11873929 + ... + 11873944.

Almost surely, 2^189982984 is an apocalyptic number.

It is an amenable number.

189982984 is a deficient number, since it is larger than the sum of its proper divisors (166235126).

189982984 is a wasteful number, since it uses less digits than its factorization.

189982984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23747879 (or 23747875 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 58.

The square root of 189982984 is about 13783.4315030764. The cubic root of 189982984 is about 574.8725454115.

The spelling of 189982984 in words is "one hundred eighty-nine million, nine hundred eighty-two thousand, nine hundred eighty-four".