18400022911 has 8 divisors (see below), whose sum is σ = 18449665920. Its totient is φ = 18350427648.

The previous prime is 18400022891. The next prime is 18400022939. The reversal of 18400022911 is 11922000481.

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 18400022911 - 2³³ = 9810088319 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 18400022911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18400020911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 840375 + ... + 861991.

It is an arithmetic number, because the mean of its divisors is an integer number (2306208240).

Almost surely, 2^18400022911 is an apocalyptic number.

18400022911 is a deficient number, since it is larger than the sum of its proper divisors (49643009).

18400022911 is a wasteful number, since it uses less digits than its factorization.

18400022911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23873.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 18400022911 in words is "eighteen billion, four hundred million, twenty-two thousand, nine hundred eleven".