189694628 has 12 divisors (see below), whose sum is σ = 337408092. Its totient is φ = 93292320.

The previous prime is 189694627. The next prime is 189694633. The reversal of 189694628 is 826496981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 39337984 + 150356644 = 6272^2 + 12262^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 189694628.

It is not an unprimeable number, because it can be changed into a prime (189694627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388475 + ... + 388962.

It is an arithmetic number, because the mean of its divisors is an integer number (28117341).

Almost surely, 2^189694628 is an apocalyptic number.

It is an amenable number.

189694628 is a deficient number, since it is larger than the sum of its proper divisors (147713464).

189694628 is a wasteful number, since it uses less digits than its factorization.

189694628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777502 (or 777500 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 53.

The square root of 189694628 is about 13772.9672910379. The cubic root of 189694628 is about 574.5815511296.

The spelling of 189694628 in words is "one hundred eighty-nine million, six hundred ninety-four thousand, six hundred twenty-eight".