188213970 has 64 divisors (see below), whose sum is σ = 546621696. Its totient is φ = 40488960.

The previous prime is 188213959. The next prime is 188214017. The reversal of 188213970 is 79312881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22791 + ... + 29930.

It is an arithmetic number, because the mean of its divisors is an integer number (8540964).

Almost surely, 2^188213970 is an apocalyptic number.

188213970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188213970 is an abundant number, since it is smaller than the sum of its proper divisors (358407726).

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

188213970 is a wasteful number, since it uses less digits than its factorization.

188213970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52755.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 188213970 is about 13719.1096649892. The cubic root of 188213970 is about 573.0826825609.

It can be divided in two parts, 18821 and 3970, that added together give a triangular number (22791 = T₂₁₃).

The spelling of 188213970 in words is "one hundred eighty-eight million, two hundred thirteen thousand, nine hundred seventy".