189151620 has 48 divisors (see below), whose sum is σ = 605286528. Its totient is φ = 43234560.

The previous prime is 189151619. The next prime is 189151643. The reversal of 189151620 is 26151981.

189151620 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224761 + ... + 225600.

It is an arithmetic number, because the mean of its divisors is an integer number (12610136).

Almost surely, 2^189151620 is an apocalyptic number.

189151620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189151620 is an abundant number, since it is smaller than the sum of its proper divisors (416134908).

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

189151620 is a wasteful number, since it uses less digits than its factorization.

189151620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450380 (or 450378 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 33.

The square root of 189151620 is about 13753.2403454604. The cubic root of 189151620 is about 574.0327734042.

The spelling of 189151620 in words is "one hundred eighty-nine million, one hundred fifty-one thousand, six hundred twenty".