189572994 has 128 divisors (see below), whose sum is σ = 487468800. Its totient is φ = 54120960.

The previous prime is 189572989. The next prime is 189573011. The reversal of 189572994 is 499275981.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 189572994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 813502 + ... + 813734.

It is an arithmetic number, because the mean of its divisors is an integer number (3808350).

Almost surely, 2^189572994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 189572994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (243734400).

189572994 is an abundant number, since it is smaller than the sum of its proper divisors (297895806).

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

189572994 is a wasteful number, since it uses less digits than its factorization.

189572994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337 (or 331 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 189572994 is about 13768.5509041438. The cubic root of 189572994 is about 574.4587158193.

The spelling of 189572994 in words is "one hundred eighty-nine million, five hundred seventy-two thousand, nine hundred ninety-four".