189098138817 has 16 divisors (see below), whose sum is σ = 320166161280. Its totient is φ = 108056079216.

The previous prime is 189098138809. The next prime is 189098138839. The reversal of 189098138817 is 718831890981.

It is not a de Polignac number, because 189098138817 - 2³ = 189098138809 is a prime.

It is a super-2 number, since 2×189098138817² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (189098138857) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 500259438 + ... + 500259815.

It is an arithmetic number, because the mean of its divisors is an integer number (20010385080).

Almost surely, 2^189098138817 is an apocalyptic number.

It is an amenable number.

189098138817 is a deficient number, since it is larger than the sum of its proper divisors (131068022463).

189098138817 is a wasteful number, since it uses less digits than its factorization.

189098138817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000519269 (or 1000519263 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 63.

The spelling of 189098138817 in words is "one hundred eighty-nine billion, ninety-eight million, one hundred thirty-eight thousand, eight hundred seventeen".