18148316 has 24 divisors (see below), whose sum is σ = 34791120. Its totient is φ = 8244992.

The previous prime is 18148309. The next prime is 18148331. The reversal of 18148316 is 61384181.

It is a happy number.

It is a super-2 number, since 2×18148316² = 658722747271712, 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 in 7 ways as a sum of consecutive naturals, for example, 2630 + ... + 6573.

It is an arithmetic number, because the mean of its divisors is an integer number (1449630).

Almost surely, 2^18148316 is an apocalyptic number.

It is an amenable number.

18148316 is a deficient number, since it is larger than the sum of its proper divisors (16642804).

18148316 is a wasteful number, since it uses less digits than its factorization.

18148316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9253 (or 9251 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 18148316 is about 4260.0840367298. The cubic root of 18148316 is about 262.7919822844.

The spelling of 18148316 in words is "eighteen million, one hundred forty-eight thousand, three hundred sixteen".