18291414779 has 12 divisors (see below), whose sum is σ = 21059775000. Its totient is φ = 15753368160.

The previous prime is 18291414773. The next prime is 18291414787. The reversal of 18291414779 is 97741419281.

It is not a de Polignac number, because 18291414779 - 2²⁸ = 18022979323 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18291414779.

It is not an unprimeable number, because it can be changed into a prime (18291414773) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2299154 + ... + 2307095.

It is an arithmetic number, because the mean of its divisors is an integer number (1754981250).

Almost surely, 2^18291414779 is an apocalyptic number.

18291414779 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

18291414779 is a deficient number, since it is larger than the sum of its proper divisors (2768360221).

18291414779 is a wasteful number, since it uses less digits than its factorization.

18291414779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4606298 (or 4606279 counting only the distinct ones).

The product of its digits is 1016064, while the sum is 53.

The spelling of 18291414779 in words is "eighteen billion, two hundred ninety-one million, four hundred fourteen thousand, seven hundred seventy-nine".