189860520 has 32 divisors (see below), whose sum is σ = 569581920. Its totient is φ = 50629440.

The previous prime is 189860501. The next prime is 189860533. The reversal of 189860520 is 25068981.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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 7 ways as a sum of consecutive naturals, for example, 790966 + ... + 791205.

It is an arithmetic number, because the mean of its divisors is an integer number (17799435).

Almost surely, 2^189860520 is an apocalyptic number.

189860520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189860520 is an abundant number, since it is smaller than the sum of its proper divisors (379721400).

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

189860520 is a wasteful number, since it uses less digits than its factorization.

189860520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1582185 (or 1582181 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 189860520 is about 13778.9883518348. The cubic root of 189860520 is about 574.7489969365.

The spelling of 189860520 in words is "one hundred eighty-nine million, eight hundred sixty thousand, five hundred twenty".