188080816 has 120 divisors (see below), whose sum is σ = 468947664. Its totient is φ = 72253440.

The previous prime is 188080801. The next prime is 188080831. The reversal of 188080816 is 618080881.

188080816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (188080801) and next prime (188080831).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 974416 + ... + 974608.

Almost surely, 2^188080816 is an apocalyptic number.

188080816 is a gapful number since it is divisible by the number (16) 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 188080816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234473832).

188080816 is an abundant number, since it is smaller than the sum of its proper divisors (280866848).

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

188080816 is a wasteful number, since it uses less digits than its factorization.

188080816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 326 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 40.

The square root of 188080816 is about 13714.2559404439. The cubic root of 188080816 is about 572.9475061734.

The spelling of 188080816 in words is "one hundred eighty-eight million, eighty thousand, eight hundred sixteen".