19418968863 has 48 divisors (see below), whose sum is σ = 33504764160. Its totient is φ = 11083634352.

The previous prime is 19418968859. The next prime is 19418968871. The reversal of 19418968863 is 36886981491.

It is not a de Polignac number, because 19418968863 - 2² = 19418968859 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a self number, because there is not a number n which added to its sum of digits gives 19418968863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19418968823) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1191870 + ... + 1208052.

It is an arithmetic number, because the mean of its divisors is an integer number (698015920).

Almost surely, 2^19418968863 is an apocalyptic number.

19418968863 is a deficient number, since it is larger than the sum of its proper divisors (14085795297).

19418968863 is a wasteful number, since it uses less digits than its factorization.

19418968863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113 (or 17100 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The spelling of 19418968863 in words is "nineteen billion, four hundred eighteen million, nine hundred sixty-eight thousand, eight hundred sixty-three".