18816316 has 24 divisors (see below), whose sum is σ = 33541200. Its totient is φ = 9235200.

The previous prime is 18816311. The next prime is 18816341. The reversal of 18816316 is 61361881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18816311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77956 + ... + 78196.

It is an arithmetic number, because the mean of its divisors is an integer number (1397550).

Almost surely, 2^18816316 is an apocalyptic number.

It is an amenable number.

18816316 is a deficient number, since it is larger than the sum of its proper divisors (14724884).

18816316 is a wasteful number, since it uses less digits than its factorization.

18816316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525 (or 523 counting only the distinct ones).

The product of its digits is 6912, while the sum is 34.

The square root of 18816316 is about 4337.7777720856. Note that the first 5 decimals coincide. The cubic root of 18816316 is about 265.9774793906.

The spelling of 18816316 in words is "eighteen million, eight hundred sixteen thousand, three hundred sixteen".