189673117 has 2 divisors, whose sum is σ = 189673118. Its totient is φ = 189673116.

The previous prime is 189673087. The next prime is 189673139. The reversal of 189673117 is 711376981.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146192281 + 43480836 = 12091^2 + 6594^2 .

It is a cyclic number.

It is not a de Polignac number, because 189673117 - 2¹⁹ = 189148829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189676117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94836558 + 94836559.

It is an arithmetic number, because the mean of its divisors is an integer number (94836559).

Almost surely, 2^189673117 is an apocalyptic number.

It is an amenable number.

189673117 is a deficient number, since it is larger than the sum of its proper divisors (1).

189673117 is an equidigital number, since it uses as much as digits as its factorization.

189673117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 43.

The square root of 189673117 is about 13772.1863551144. The cubic root of 189673117 is about 574.5598315004.

The spelling of 189673117 in words is "one hundred eighty-nine million, six hundred seventy-three thousand, one hundred seventeen".