189911113 has 12 divisors (see below), whose sum is σ = 222514320. Its totient is φ = 161604072.

The previous prime is 189911087. The next prime is 189911119. The reversal of 189911113 is 311119981.

It is a de Polignac number, because none of the positive numbers 2^k-189911113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (189911119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7131 + ... + 20752.

It is an arithmetic number, because the mean of its divisors is an integer number (18542860).

Almost surely, 2^189911113 is an apocalyptic number.

It is an amenable number.

189911113 is a deficient number, since it is larger than the sum of its proper divisors (32603207).

189911113 is a wasteful number, since it uses less digits than its factorization.

189911113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28036 (or 28029 counting only the distinct ones).

The product of its digits is 1944, while the sum is 34.

The square root of 189911113 is about 13780.8241045302. The cubic root of 189911113 is about 574.8000443994.

The spelling of 189911113 in words is "one hundred eighty-nine million, nine hundred eleven thousand, one hundred thirteen".