18244513463 has 16 divisors (see below), whose sum is σ = 20090384160. Its totient is φ = 16567087680.

The previous prime is 18244513433. The next prime is 18244513501. The reversal of 18244513463 is 36431544281.

It is not a de Polignac number, because 18244513463 - 2¹⁶ = 18244447927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18244513463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244513433) 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, 1239833 + ... + 1254461.

It is an arithmetic number, because the mean of its divisors is an integer number (1255649010).

Almost surely, 2^18244513463 is an apocalyptic number.

18244513463 is a deficient number, since it is larger than the sum of its proper divisors (1845870697).

18244513463 is an equidigital number, since it uses as much as digits as its factorization.

18244513463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15599 (or 15577 counting only the distinct ones).

The product of its digits is 276480, while the sum is 41.

The spelling of 18244513463 in words is "eighteen billion, two hundred forty-four million, five hundred thirteen thousand, four hundred sixty-three".