18313464444 has 24 divisors (see below), whose sum is σ = 46616091648. Its totient is φ = 5549534640.

The previous prime is 18313464419. The next prime is 18313464461. The reversal of 18313464444 is 44446431381.

It is a junction number, because it is equal to n+sod(n) for n = 18313464396 and 18313464405.

It is a congruent number.

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, 69369052 + ... + 69369315.

It is an arithmetic number, because the mean of its divisors is an integer number (1942337152).

Almost surely, 2^18313464444 is an apocalyptic number.

It is an amenable number.

18313464444 is an abundant number, since it is smaller than the sum of its proper divisors (28302627204).

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

18313464444 is a wasteful number, since it uses less digits than its factorization.

18313464444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138738385 (or 138738383 counting only the distinct ones).

The product of its digits is 442368, while the sum is 42.

The spelling of 18313464444 in words is "eighteen billion, three hundred thirteen million, four hundred sixty-four thousand, four hundred forty-four".