18319348 has 6 divisors (see below), whose sum is σ = 32058866. Its totient is φ = 9159672.

The previous prime is 18319321. The next prime is 18319351. The reversal of 18319348 is 84391381.

It can be written as a sum of positive squares in only one way, i.e., 12759184 + 5560164 = 3572^2 + 2358^2 .

It is a super-2 number, since 2×18319348² = 671197022290208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2289915 + ... + 2289922.

Almost surely, 2^18319348 is an apocalyptic number.

It is an amenable number.

18319348 is a deficient number, since it is larger than the sum of its proper divisors (13739518).

18319348 is a wasteful number, since it uses less digits than its factorization.

18319348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4579841 (or 4579839 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 18319348 is about 4280.1107462308. The cubic root of 18319348 is about 263.6149306541.

The spelling of 18319348 in words is "eighteen million, three hundred nineteen thousand, three hundred forty-eight".