18318016448 has 28 divisors (see below), whose sum is σ = 36581361432. Its totient is φ = 9100665600.

The previous prime is 18318016429. The next prime is 18318016463. The reversal of 18318016448 is 84461081381.

It is a junction number, because it is equal to n+sod(n) for n = 18318016399 and 18318016408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 901478 + ... + 921573.

It is an arithmetic number, because the mean of its divisors is an integer number (1306477194).

Almost surely, 2^18318016448 is an apocalyptic number.

It is an amenable number.

18318016448 is a deficient number, since it is larger than the sum of its proper divisors (18263344984).

18318016448 is a wasteful number, since it uses less digits than its factorization.

18318016448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823220 (or 1823210 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 44.

The spelling of 18318016448 in words is "eighteen billion, three hundred eighteen million, sixteen thousand, four hundred forty-eight".