18793316 has 18 divisors (see below), whose sum is σ = 33990390. Its totient is φ = 9091680.

The previous prime is 18793297. The next prime is 18793319. The reversal of 18793316 is 61339781.

It can be written as a sum of positive squares in only one way, i.e., 17255716 + 1537600 = 4154^2 + 1240^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18793316.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18793319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1400 + ... + 6288.

It is an arithmetic number, because the mean of its divisors is an integer number (1888355).

Almost surely, 2^18793316 is an apocalyptic number.

It is an amenable number.

18793316 is a deficient number, since it is larger than the sum of its proper divisors (15197074).

18793316 is a wasteful number, since it uses less digits than its factorization.

18793316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4955 (or 4922 counting only the distinct ones).

The product of its digits is 27216, while the sum is 38.

The square root of 18793316 is about 4335.1258343905. The cubic root of 18793316 is about 265.8690632643.

The spelling of 18793316 in words is "eighteen million, seven hundred ninety-three thousand, three hundred sixteen".