189973926 has 12 divisors (see below), whose sum is σ = 411610212. Its totient is φ = 63324636.

The previous prime is 189973909. The next prime is 189973933. The reversal of 189973926 is 629379981.

189973926 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5277036 + ... + 5277071.

It is an arithmetic number, because the mean of its divisors is an integer number (34300851).

Almost surely, 2^189973926 is an apocalyptic number.

189973926 is an abundant number, since it is smaller than the sum of its proper divisors (221636286).

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

189973926 is a wasteful number, since it uses less digits than its factorization.

189973926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554115 (or 10554112 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 189973926 is about 13783.1029162522. The cubic root of 189973926 is about 574.8634090173.

The spelling of 189973926 in words is "one hundred eighty-nine million, nine hundred seventy-three thousand, nine hundred twenty-six".