18163469365 has 12 divisors (see below), whose sum is σ = 22269791916. Its totient is φ = 14221601408.

The previous prime is 18163469353. The next prime is 18163469369. The reversal of 18163469365 is 56396436181.

It can be written as a sum of positive squares in 2 ways, for example, as 2095625284 + 16067844081 = 45778^2 + 126759^2 .

It is not a de Polignac number, because 18163469365 - 2⁵ = 18163469333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18163469369) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 811204 + ... + 833293.

It is an arithmetic number, because the mean of its divisors is an integer number (1855815993).

Almost surely, 2^18163469365 is an apocalyptic number.

It is an amenable number.

18163469365 is a deficient number, since it is larger than the sum of its proper divisors (4106322551).

18163469365 is an equidigital number, since it uses as much as digits as its factorization.

18163469365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644596 (or 1644549 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 52.

The spelling of 18163469365 in words is "eighteen billion, one hundred sixty-three million, four hundred sixty-nine thousand, three hundred sixty-five".