18690316 has 6 divisors (see below), whose sum is σ = 32708060. Its totient is φ = 9345156.

The previous prime is 18690311. The next prime is 18690317. The reversal of 18690316 is 61309681.

It is not an unprimeable number, because it can be changed into a prime (18690311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2336286 + ... + 2336293.

Almost surely, 2^18690316 is an apocalyptic number.

It is an amenable number.

18690316 is a deficient number, since it is larger than the sum of its proper divisors (14017744).

18690316 is a wasteful number, since it uses less digits than its factorization.

18690316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4672583 (or 4672581 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 18690316 is about 4323.2298111481. The cubic root of 18690316 is about 265.3824595003.

Adding to 18690316 its reverse (61309681), we get a palindrome (79999997).

The spelling of 18690316 in words is "eighteen million, six hundred ninety thousand, three hundred sixteen".