188944090 has 32 divisors (see below), whose sum is σ = 344897280. Its totient is φ = 74520000.

The previous prime is 188944081. The next prime is 188944097. The reversal of 188944090 is 90449881.

188944090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (188944097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 251215 + ... + 251965.

It is an arithmetic number, because the mean of its divisors is an integer number (10778040).

Almost surely, 2^188944090 is an apocalyptic number.

188944090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188944090 is a deficient number, since it is larger than the sum of its proper divisors (155953190).

188944090 is a wasteful number, since it uses less digits than its factorization.

188944090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 188944090 is about 13745.6935074226. The cubic root of 188944090 is about 573.8227609003.

The spelling of 188944090 in words is "one hundred eighty-eight million, nine hundred forty-four thousand, ninety".