18340078904 has 24 divisors (see below), whose sum is σ = 39302340840. Its totient is φ = 7859599488.

The previous prime is 18340078903. The next prime is 18340078921. The reversal of 18340078904 is 40987004381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340078901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1004384 + ... + 1022480.

It is an arithmetic number, because the mean of its divisors is an integer number (1637597535).

Almost surely, 2^18340078904 is an apocalyptic number.

18340078904 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18340078904 is an abundant number, since it is smaller than the sum of its proper divisors (20962261936).

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

18340078904 is an frugal number, since it uses more digits than its factorization.

18340078904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36207 (or 18106 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The spelling of 18340078904 in words is "eighteen billion, three hundred forty million, seventy-eight thousand, nine hundred four".