18854963479 has 8 divisors (see below), whose sum is σ = 20570054400. Its totient is φ = 17140039800.

The previous prime is 18854963467. The next prime is 18854963503. The reversal of 18854963479 is 97436945881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18854963479 - 2⁹ = 18854962967 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 18854963479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18854963779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372322 + ... + 419920.

It is an arithmetic number, because the mean of its divisors is an integer number (2571256800).

Almost surely, 2^18854963479 is an apocalyptic number.

18854963479 is a deficient number, since it is larger than the sum of its proper divisors (1715090921).

18854963479 is a wasteful number, since it uses less digits than its factorization.

18854963479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83621.

The product of its digits is 52254720, while the sum is 64.

The spelling of 18854963479 in words is "eighteen billion, eight hundred fifty-four million, nine hundred sixty-three thousand, four hundred seventy-nine".