188564532 has 48 divisors (see below), whose sum is σ = 480927552. Its totient is φ = 57150720.

The previous prime is 188564521. The next prime is 188564549. The reversal of 188564532 is 235465881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1432 + ... + 19472.

It is an arithmetic number, because the mean of its divisors is an integer number (10019324).

Almost surely, 2^188564532 is an apocalyptic number.

188564532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 188564532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240463776).

188564532 is an abundant number, since it is smaller than the sum of its proper divisors (292363020).

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

188564532 is a wasteful number, since it uses less digits than its factorization.

188564532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18128 (or 18126 counting only the distinct ones).

The product of its digits is 230400, while the sum is 42.

The square root of 188564532 is about 13731.8801334704. The cubic root of 188564532 is about 573.4382644012.

The spelling of 188564532 in words is "one hundred eighty-eight million, five hundred sixty-four thousand, five hundred thirty-two".