188296668 has 72 divisors (see below), whose sum is σ = 545781600. Its totient is φ = 53619840.

The previous prime is 188296657. The next prime is 188296679. The reversal of 188296668 is 866692881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (188296657) and next prime (188296679).

It is a congruent number.

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, 86878 + ... + 89018.

It is an arithmetic number, because the mean of its divisors is an integer number (7580300).

Almost surely, 2^188296668 is an apocalyptic number.

188296668 is a gapful number since it is divisible by the number (18) 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 188296668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272890800).

188296668 is an abundant number, since it is smaller than the sum of its proper divisors (357484932).

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

188296668 is a wasteful number, since it uses less digits than its factorization.

188296668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507 (or 2502 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 188296668 is about 13722.1233050866. The cubic root of 188296668 is about 573.1666045146.

The spelling of 188296668 in words is "one hundred eighty-eight million, two hundred ninety-six thousand, six hundred sixty-eight".