18777364973 has 8 divisors (see below), whose sum is σ = 19789564320. Its totient is φ = 17767557360.

The previous prime is 18777364967. The next prime is 18777365017. The reversal of 18777364973 is 37946377781.

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 18777364973 - 2¹⁸ = 18777102829 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18777364373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 581798 + ... + 613223.

It is an arithmetic number, because the mean of its divisors is an integer number (2473695540).

Almost surely, 2^18777364973 is an apocalyptic number.

It is an amenable number.

18777364973 is a deficient number, since it is larger than the sum of its proper divisors (1012199347).

18777364973 is a wasteful number, since it uses less digits than its factorization.

18777364973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195867.

The product of its digits is 37340352, while the sum is 62.

The spelling of 18777364973 in words is "eighteen billion, seven hundred seventy-seven million, three hundred sixty-four thousand, nine hundred seventy-three".