189218922 has 16 divisors (see below), whose sum is σ = 378588000. Its totient is φ = 63047952.

The previous prime is 189218917. The next prime is 189218933. The reversal of 189218922 is 229812981.

It is a zygodrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16488 + ... + 25500.

It is an arithmetic number, because the mean of its divisors is an integer number (23661750).

Almost surely, 2^189218922 is an apocalyptic number.

189218922 is an abundant number, since it is smaller than the sum of its proper divisors (189369078).

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

189218922 is a wasteful number, since it uses less digits than its factorization.

189218922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12517.

The product of its digits is 41472, while the sum is 42.

The square root of 189218922 is about 13755.6868966984. The cubic root of 189218922 is about 574.1008474931.

The spelling of 189218922 in words is "one hundred eighty-nine million, two hundred eighteen thousand, nine hundred twenty-two".