189784968 has 32 divisors (see below), whose sum is σ = 475569600. Its totient is φ = 63114048.

The previous prime is 189784967. The next prime is 189784999. The reversal of 189784968 is 869487981.

It is a super-2 number, since 2×189784968² = 72036668157522048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (189784963) 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, 1530 + ... + 19542.

It is an arithmetic number, because the mean of its divisors is an integer number (14861550).

Almost surely, 2^189784968 is an apocalyptic number.

It is an amenable number.

189784968 is an abundant number, since it is smaller than the sum of its proper divisors (285784632).

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

189784968 is a wasteful number, since it uses less digits than its factorization.

189784968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18461 (or 18457 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The square root of 189784968 is about 13776.2465134738. The cubic root of 189784968 is about 574.6727493885.

The spelling of 189784968 in words is "one hundred eighty-nine million, seven hundred eighty-four thousand, nine hundred sixty-eight".