9189394564236 has 12 divisors (see below), whose sum is σ = 21441920649912. Its totient is φ = 3063131521408.

The previous prime is 9189394564201. The next prime is 9189394564237. The reversal of 9189394564236 is 6324654939819.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (9189394564237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382891440165 + ... + 382891440188.

It is an arithmetic number, because the mean of its divisors is an integer number (1786826720826).

Almost surely, 2^{9189394564236} is an apocalyptic number.

It is an amenable number.

9189394564236 is an abundant number, since it is smaller than the sum of its proper divisors (12252526085676).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9189394564236 is a wasteful number, since it uses less digits than its factorization.

9189394564236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765782880360 (or 765782880358 counting only the distinct ones).

The product of its digits is 302330880, while the sum is 69.

The spelling of 9189394564236 in words is "nine trillion, one hundred eighty-nine billion, three hundred ninety-four million, five hundred sixty-four thousand, two hundred thirty-six".