189139118 has 32 divisors (see below), whose sum is σ = 332337600. Its totient is φ = 80697120.

The previous prime is 189139117. The next prime is 189139121. The reversal of 189139118 is 811931981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189139117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 200528 + ... + 201468.

It is an arithmetic number, because the mean of its divisors is an integer number (10385550).

Almost surely, 2^189139118 is an apocalyptic number.

189139118 is a deficient number, since it is larger than the sum of its proper divisors (143198482).

189139118 is an equidigital number, since it uses as much as digits as its factorization.

189139118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257 (or 1243 counting only the distinct ones).

The product of its digits is 15552, while the sum is 41.

The square root of 189139118 is about 13752.7858268789. The cubic root of 189139118 is about 574.0201262029.

The spelling of 189139118 in words is "one hundred eighty-nine million, one hundred thirty-nine thousand, one hundred eighteen".