189598992 has 80 divisors (see below), whose sum is σ = 537846528. Its totient is φ = 57075840.

The previous prime is 189598991. The next prime is 189598999. The reversal of 189598992 is 299895981.

It is not an unprimeable number, because it can be changed into a prime (189598991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84963 + ... + 87165.

Almost surely, 2^189598992 is an apocalyptic number.

189598992 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189598992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (268923264).

189598992 is an abundant number, since it is smaller than the sum of its proper divisors (348247536).

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

189598992 is a wasteful number, since it uses less digits than its factorization.

189598992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2388 (or 2382 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 60.

The square root of 189598992 is about 13769.4949798458. The cubic root of 189598992 is about 574.4849750010.

The spelling of 189598992 in words is "one hundred eighty-nine million, five hundred ninety-eight thousand, nine hundred ninety-two".