189661120 has 56 divisors (see below), whose sum is σ = 492697008. Its totient is φ = 68966400.

The previous prime is 189661103. The next prime is 189661141. The reversal of 189661120 is 21166981.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23421 + ... + 30460.

Almost surely, 2^189661120 is an apocalyptic number.

189661120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189661120 is an abundant number, since it is smaller than the sum of its proper divisors (303035888).

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

189661120 is a wasteful number, since it uses less digits than its factorization.

189661120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53909 (or 53899 counting only the distinct ones).

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

The square root of 189661120 is about 13771.7507964674. The cubic root of 189661120 is about 574.5477174315.

The spelling of 189661120 in words is "one hundred eighty-nine million, six hundred sixty-one thousand, one hundred twenty".