18779414943 has 16 divisors (see below), whose sum is σ = 25279672320. Its totient is φ = 12399722496.

The previous prime is 18779414933. The next prime is 18779414947. The reversal of 18779414943 is 34941497781.

It is a happy number.

It is not a de Polignac number, because 18779414943 - 2³² = 14484447647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18779414947) 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, 181663 + ... + 265631.

It is an arithmetic number, because the mean of its divisors is an integer number (1579979520).

Almost surely, 2^18779414943 is an apocalyptic number.

18779414943 is a deficient number, since it is larger than the sum of its proper divisors (6500257377).

18779414943 is a wasteful number, since it uses less digits than its factorization.

18779414943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84686.

The product of its digits is 6096384, while the sum is 57.

The spelling of 18779414943 in words is "eighteen billion, seven hundred seventy-nine million, four hundred fourteen thousand, nine hundred forty-three".