188845090 has 32 divisors (see below), whose sum is σ = 393963264. Its totient is φ = 63833280.

The previous prime is 188845073. The next prime is 188845127. The reversal of 188845090 is 90548881.

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, 14029 + ... + 23968.

It is an arithmetic number, because the mean of its divisors is an integer number (12311352).

Almost surely, 2^188845090 is an apocalyptic number.

188845090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188845090 is an abundant number, since it is smaller than the sum of its proper divisors (205118174).

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

188845090 is a wasteful number, since it uses less digits than its factorization.

188845090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38082.

The product of its (nonzero) digits is 92160, while the sum is 43.

The square root of 188845090 is about 13742.0919077119. The cubic root of 188845090 is about 573.7225224681.

The spelling of 188845090 in words is "one hundred eighty-eight million, eight hundred forty-five thousand, ninety".