189636125 has 32 divisors (see below), whose sum is σ = 276057600. Its totient is φ = 130006800.

The previous prime is 189636119. The next prime is 189636143. The reversal of 189636125 is 521636981.

It is not a de Polignac number, because 189636125 - 2¹² = 189632029 is a prime.

It is an alternating number because its digits alternate between odd and even.

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, 40664 + ... + 45086.

It is an arithmetic number, because the mean of its divisors is an integer number (8626800).

Almost surely, 2^189636125 is an apocalyptic number.

It is an amenable number.

189636125 is a deficient number, since it is larger than the sum of its proper divisors (86421475).

189636125 is an frugal number, since it uses more digits than its factorization.

189636125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4459 (or 4435 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 189636125 is about 13770.8432929868. The cubic root of 189636125 is about 574.5224768847.

The spelling of 189636125 in words is "one hundred eighty-nine million, six hundred thirty-six thousand, one hundred twenty-five".