18798309954 has 16 divisors (see below), whose sum is σ = 41774022240. Its totient is φ = 6266103300.

The previous prime is 18798309949. The next prime is 18798309967. The reversal of 18798309954 is 45990389781.

It is a junction number, because it is equal to n+sod(n) for n = 18798309891 and 18798309900.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174058372 + ... + 174058479.

It is an arithmetic number, because the mean of its divisors is an integer number (2610876390).

Almost surely, 2^18798309954 is an apocalyptic number.

18798309954 is an abundant number, since it is smaller than the sum of its proper divisors (22975712286).

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

18798309954 is a wasteful number, since it uses less digits than its factorization.

18798309954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348116862 (or 348116856 counting only the distinct ones).

The product of its (nonzero) digits is 19595520, while the sum is 63.

The spelling of 18798309954 in words is "eighteen billion, seven hundred ninety-eight million, three hundred nine thousand, nine hundred fifty-four".