189940120 has 16 divisors (see below), whose sum is σ = 427365360. Its totient is φ = 75976032.

The previous prime is 189940103. The next prime is 189940147. The reversal of 189940120 is 21049981.

It is a super-2 number, since 2×189940120² = 72154498371228800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2374212 + ... + 2374291.

It is an arithmetic number, because the mean of its divisors is an integer number (26710335).

Almost surely, 2^189940120 is an apocalyptic number.

189940120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189940120 is an abundant number, since it is smaller than the sum of its proper divisors (237425240).

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

189940120 is a wasteful number, since it uses less digits than its factorization.

189940120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4748514 (or 4748510 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 189940120 is about 13781.8765050337. The cubic root of 189940120 is about 574.8293078722.

The spelling of 189940120 in words is "one hundred eighty-nine million, nine hundred forty thousand, one hundred twenty".