18744672463 has 16 divisors (see below), whose sum is σ = 20526944256. Its totient is φ = 16975535040.

The previous prime is 18744672461. The next prime is 18744672487. The reversal of 18744672463 is 36427644781.

It is a cyclic number.

It is not a de Polignac number, because 18744672463 - 2¹ = 18744672461 is a prime.

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 18744672463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18744672461) 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, 6346195 + ... + 6349147.

It is an arithmetic number, because the mean of its divisors is an integer number (1282934016).

Almost surely, 2^18744672463 is an apocalyptic number.

18744672463 is a deficient number, since it is larger than the sum of its proper divisors (1782271793).

18744672463 is a wasteful number, since it uses less digits than its factorization.

18744672463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4974.

The product of its digits is 5419008, while the sum is 52.

The spelling of 18744672463 in words is "eighteen billion, seven hundred forty-four million, six hundred seventy-two thousand, four hundred sixty-three".