18616202794369 has 4 divisors (see below), whose sum is σ = 18616219205296. Its totient is φ = 18616186383444.

The previous prime is 18616202794361. The next prime is 18616202794447. The reversal of 18616202794369 is 96349720261681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18616202794369 - 2³ = 18616202794361 is a prime.

It is a super-2 number, since 2×18616202794369² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18616202794369.

It is not an unprimeable number, because it can be changed into a prime (18616202794361) 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, 6366519 + ... + 8818444.

It is an arithmetic number, because the mean of its divisors is an integer number (4654054801324).

Almost surely, 2^{18616202794369} is an apocalyptic number.

It is an amenable number.

18616202794369 is a deficient number, since it is larger than the sum of its proper divisors (16410927).

18616202794369 is a wasteful number, since it uses less digits than its factorization.

18616202794369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16410926.

The product of its (nonzero) digits is 47029248, while the sum is 64.

The spelling of 18616202794369 in words is "eighteen trillion, six hundred sixteen billion, two hundred two million, seven hundred ninety-four thousand, three hundred sixty-nine".