18396305943 has 16 divisors (see below), whose sum is σ = 25110626016. Its totient is φ = 11976422400.

The previous prime is 18396305923. The next prime is 18396305969. The reversal of 18396305943 is 34950369381.

It is a happy number.

It is not a de Polignac number, because 18396305943 - 2²⁰ = 18395257367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18396305923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 393730 + ... + 437967.

It is an arithmetic number, because the mean of its divisors is an integer number (1569414126).

Almost surely, 2^18396305943 is an apocalyptic number.

18396305943 is a deficient number, since it is larger than the sum of its proper divisors (6714320073).

18396305943 is a wasteful number, since it uses less digits than its factorization.

18396305943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831874.

The product of its (nonzero) digits is 2099520, while the sum is 51.

The spelling of 18396305943 in words is "eighteen billion, three hundred ninety-six million, three hundred five thousand, nine hundred forty-three".