189812285 has 32 divisors (see below), whose sum is σ = 250967808. Its totient is φ = 136972800.

The previous prime is 189812269. The next prime is 189812303. The reversal of 189812285 is 582218981.

189812285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 189812285 - 2⁴ = 189812269 is a prime.

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, 814529 + ... + 814761.

It is an arithmetic number, because the mean of its divisors is an integer number (7842744).

Almost surely, 2^189812285 is an apocalyptic number.

It is an amenable number.

189812285 is a deficient number, since it is larger than the sum of its proper divisors (61155523).

189812285 is a wasteful number, since it uses less digits than its factorization.

189812285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485.

The product of its digits is 92160, while the sum is 44.

The square root of 189812285 is about 13777.2379307320. The cubic root of 189812285 is about 574.7003202099.

The spelling of 189812285 in words is "one hundred eighty-nine million, eight hundred twelve thousand, two hundred eighty-five".