189813190 has 32 divisors (see below), whose sum is σ = 400002624. Its totient is φ = 63490560.

The previous prime is 189813161. The next prime is 189813199. The reversal of 189813190 is 91318981.

It is a happy number.

It is a super-2 number, since 2×189813190² = 72058094195952200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189813199) 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, 30199 + ... + 35938.

It is an arithmetic number, because the mean of its divisors is an integer number (12500082).

Almost surely, 2^189813190 is an apocalyptic number.

189813190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189813190 is an abundant number, since it is smaller than the sum of its proper divisors (210189434).

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

189813190 is a wasteful number, since it uses less digits than its factorization.

189813190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66192.

The product of its (nonzero) digits is 15552, while the sum is 40.

The square root of 189813190 is about 13777.2707747217. The cubic root of 189813190 is about 574.7012335736.

The spelling of 189813190 in words is "one hundred eighty-nine million, eight hundred thirteen thousand, one hundred ninety".