189512085 has 32 divisors (see below), whose sum is σ = 348106752. Its totient is φ = 86241600.

The previous prime is 189512053. The next prime is 189512093. The reversal of 189512085 is 580215981.

It is not a de Polignac number, because 189512085 - 2⁵ = 189512053 is a prime.

It is a super-2 number, since 2×189512085² = 71829660722094450, 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 31 ways as a sum of consecutive naturals, for example, 19860 + ... + 27810.

It is an arithmetic number, because the mean of its divisors is an integer number (10878336).

Almost surely, 2^189512085 is an apocalyptic number.

189512085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189512085 is a deficient number, since it is larger than the sum of its proper divisors (158594667).

189512085 is a wasteful number, since it uses less digits than its factorization.

189512085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8193.

The product of its (nonzero) digits is 28800, while the sum is 39.

The square root of 189512085 is about 13766.3388379046. The cubic root of 189512085 is about 574.3971855117.

The spelling of 189512085 in words is "one hundred eighty-nine million, five hundred twelve thousand, eighty-five".