189688604 has 30 divisors (see below), whose sum is σ = 387277464. Its totient is φ = 81291000.

The previous prime is 189688579. The next prime is 189688607. The reversal of 189688604 is 406886981.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189688607) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 272 + ... + 19479.

Almost surely, 2^189688604 is an apocalyptic number.

189688604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

189688604 is an abundant number, since it is smaller than the sum of its proper divisors (197588860).

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

189688604 is an equidigital number, since it uses as much as digits as its factorization.

189688604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19783 (or 19760 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 50.

The square root of 189688604 is about 13772.7486000435. The cubic root of 189688604 is about 574.5754688701.

It can be divided in two parts, 18968 and 8604, that added together give a palindrome (27572).

The spelling of 189688604 in words is "one hundred eighty-nine million, six hundred eighty-eight thousand, six hundred four".