189015520 has 48 divisors (see below), whose sum is σ = 472823568. Its totient is φ = 71157760.

The previous prime is 189015517. The next prime is 189015521. The reversal of 189015520 is 25510981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189015521) by changing a digit.

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, 32026 + ... + 37465.

It is an arithmetic number, because the mean of its divisors is an integer number (9850491).

Almost surely, 2^189015520 is an apocalyptic number.

189015520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

189015520 is an abundant number, since it is smaller than the sum of its proper divisors (283808048).

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

189015520 is a wasteful number, since it uses less digits than its factorization.

189015520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69523 (or 69515 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 31.

The square root of 189015520 is about 13748.2915302229. The cubic root of 189015520 is about 573.8950627044.

The spelling of 189015520 in words is "one hundred eighty-nine million, fifteen thousand, five hundred twenty".