189038168109 has 24 divisors (see below), whose sum is σ = 322823804160. Its totient is φ = 104296919328.

The previous prime is 189038168093. The next prime is 189038168201. The reversal of 189038168109 is 901861830981.

189038168109 is a `hidden beast` number, since 18 + 90 + 381 + 68 + 109 = 666.

It is not a de Polignac number, because 189038168109 - 2⁴ = 189038168093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189038169109) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51732757 + ... + 51736410.

It is an arithmetic number, because the mean of its divisors is an integer number (13450991840).

Almost surely, 2^189038168109 is an apocalyptic number.

It is an amenable number.

189038168109 is a deficient number, since it is larger than the sum of its proper divisors (133785636051).

189038168109 is a wasteful number, since it uses less digits than its factorization.

189038168109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103469209 (or 103469206 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 189038168109 in words is "one hundred eighty-nine billion, thirty-eight million, one hundred sixty-eight thousand, one hundred nine".