188013312 has 90 divisors (see below), whose sum is σ = 560683508. Its totient is φ = 62664192.

The previous prime is 188013299. The next prime is 188013349. The reversal of 188013312 is 213310881.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16203 + ... + 25269.

Almost surely, 2^188013312 is an apocalyptic number.

188013312 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 188013312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280341754).

188013312 is an abundant number, since it is smaller than the sum of its proper divisors (372670196).

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

188013312 is an frugal number, since it uses more digits than its factorization.

188013312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9095 (or 9072 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 188013312 is about 13711.7946309008. The cubic root of 188013312 is about 572.8789525285.

The spelling of 188013312 in words is "one hundred eighty-eight million, thirteen thousand, three hundred twelve".