18404684051 has 8 divisors (see below), whose sum is σ = 20005668144. Its totient is φ = 16830162720.

The previous prime is 18404684047. The next prime is 18404684057. The reversal of 18404684051 is 15048640481.

It is a happy number.

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 18404684051 - 2² = 18404684047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18404684057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6614240 + ... + 6617021.

It is an arithmetic number, because the mean of its divisors is an integer number (2500708518).

Almost surely, 2^18404684051 is an apocalyptic number.

18404684051 is a deficient number, since it is larger than the sum of its proper divisors (1600984093).

18404684051 is a wasteful number, since it uses less digits than its factorization.

18404684051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231381.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 18404684051 in words is "eighteen billion, four hundred four million, six hundred eighty-four thousand, fifty-one".