18814735779838 has 8 divisors (see below), whose sum is σ = 28231906423680. Its totient is φ = 9404100305280.

The previous prime is 18814735779769. The next prime is 18814735779863. The reversal of 18814735779838 is 83897753741881.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1633785123 + ... + 1633796638.

It is an arithmetic number, because the mean of its divisors is an integer number (3528988302960).

Almost surely, 2^{18814735779838} is an apocalyptic number.

18814735779838 is a deficient number, since it is larger than the sum of its proper divisors (9417170643842).

18814735779838 is a wasteful number, since it uses less digits than its factorization.

18814735779838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267584642.

The product of its digits is 2275983360, while the sum is 79.

The spelling of 18814735779838 in words is "eighteen trillion, eight hundred fourteen billion, seven hundred thirty-five million, seven hundred seventy-nine thousand, eight hundred thirty-eight".