189685190 has 16 divisors (see below), whose sum is σ = 344456928. Its totient is φ = 75202176.

The previous prime is 189685157. The next prime is 189685217. The reversal of 189685190 is 91586981.

It is a super-2 number, since 2×189685190² = 71960942610672200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82802 + ... + 85061.

It is an arithmetic number, because the mean of its divisors is an integer number (21528558).

Almost surely, 2^189685190 is an apocalyptic number.

189685190 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189685190 is a deficient number, since it is larger than the sum of its proper divisors (154771738).

189685190 is a wasteful number, since it uses less digits than its factorization.

189685190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167983.

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 189685190 is about 13772.6246590837. The cubic root of 189685190 is about 574.5720217953.

The spelling of 189685190 in words is "one hundred eighty-nine million, six hundred eighty-five thousand, one hundred ninety".