188122830 has 32 divisors (see below), whose sum is σ = 515994624. Its totient is φ = 42999456.

The previous prime is 188122829. The next prime is 188122853. The reversal of 188122830 is 38221881.

It is a junction number, because it is equal to n+sod(n) for n = 188122791 and 188122800.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447702 + ... + 448121.

It is an arithmetic number, because the mean of its divisors is an integer number (16124832).

Almost surely, 2^188122830 is an apocalyptic number.

188122830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188122830 is an abundant number, since it is smaller than the sum of its proper divisors (327871794).

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

188122830 is a wasteful number, since it uses less digits than its factorization.

188122830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895840.

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 188122830 is about 13715.7876186532. The cubic root of 188122830 is about 572.9901651836.

The spelling of 188122830 in words is "one hundred eighty-eight million, one hundred twenty-two thousand, eight hundred thirty".