189110190 has 32 divisors (see below), whose sum is σ = 455499936. Its totient is φ = 50247680.

The previous prime is 189110183. The next prime is 189110191. The reversal of 189110190 is 91011981.

It is a happy number.

It is a super-2 number, since 2×189110190² = 71525327923672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189110191) 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, 2787 + ... + 19646.

It is an arithmetic number, because the mean of its divisors is an integer number (14234373).

Almost surely, 2^189110190 is an apocalyptic number.

189110190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189110190 is an abundant number, since it is smaller than the sum of its proper divisors (266389746).

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

189110190 is a wasteful number, since it uses less digits than its factorization.

189110190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22724.

The product of its (nonzero) digits is 648, while the sum is 30.

The square root of 189110190 is about 13751.7340724725. The cubic root of 189110190 is about 573.9908600891.

The spelling of 189110190 in words is "one hundred eighty-nine million, one hundred ten thousand, one hundred ninety".