18804367806 has 32 divisors (see below), whose sum is σ = 42999767808. Its totient is φ = 5370382080.

The previous prime is 18804367793. The next prime is 18804367817. The reversal of 18804367806 is 60876340881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5166 + ... + 193998.

It is an arithmetic number, because the mean of its divisors is an integer number (1343742744).

Almost surely, 2^18804367806 is an apocalyptic number.

18804367806 is an abundant number, since it is smaller than the sum of its proper divisors (24195400002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18804367806 is a wasteful number, since it uses less digits than its factorization.

18804367806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191216.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 18804367806 in words is "eighteen billion, eight hundred four million, three hundred sixty-seven thousand, eight hundred six".