189118319 has 8 divisors (see below), whose sum is σ = 215646480. Its totient is φ = 164301696.

The previous prime is 189118313. The next prime is 189118331. The reversal of 189118319 is 913811981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 189118319 - 2²⁰ = 188069743 is a prime.

It is a super-2 number, since 2×189118319² = 71531477162771522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189118313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427649 + ... + 428090.

It is an arithmetic number, because the mean of its divisors is an integer number (26955810).

Almost surely, 2^189118319 is an apocalyptic number.

189118319 is a deficient number, since it is larger than the sum of its proper divisors (26528161).

189118319 is a wasteful number, since it uses less digits than its factorization.

189118319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 855769.

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

The square root of 189118319 is about 13752.0296320216. The cubic root of 189118319 is about 573.9990844033. Note that the first 3 decimals are identical.

The spelling of 189118319 in words is "one hundred eighty-nine million, one hundred eighteen thousand, three hundred nineteen".