189261113 has 2 divisors, whose sum is σ = 189261114. Its totient is φ = 189261112.

The previous prime is 189261091. The next prime is 189261143. The reversal of 189261113 is 311162981.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148913209 + 40347904 = 12203^2 + 6352^2 .

It is a cyclic number.

It is not a de Polignac number, because 189261113 - 2⁶ = 189261049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 189261113.

It is not a weakly prime, because it can be changed into another prime (189261143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94630556 + 94630557.

It is an arithmetic number, because the mean of its divisors is an integer number (94630557).

Almost surely, 2^189261113 is an apocalyptic number.

It is an amenable number.

189261113 is a deficient number, since it is larger than the sum of its proper divisors (1).

189261113 is an equidigital number, since it uses as much as digits as its factorization.

189261113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2592, while the sum is 32.

The square root of 189261113 is about 13757.2203951234. The cubic root of 189261113 is about 574.1435142774.

The spelling of 189261113 in words is "one hundred eighty-nine million, two hundred sixty-one thousand, one hundred thirteen".