18601316 has 12 divisors (see below), whose sum is σ = 32609388. Its totient is φ = 9284352.

The previous prime is 18601313. The next prime is 18601321. The reversal of 18601316 is 61310681.

It can be written as a sum of positive squares in 2 ways, for example, as 3422500 + 15178816 = 1850^2 + 3896^2 .

It is not an unprimeable number, because it can be changed into a prime (18601313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1301 + ... + 6236.

It is an arithmetic number, because the mean of its divisors is an integer number (2717449).

Almost surely, 2^18601316 is an apocalyptic number.

It is an amenable number.

18601316 is a deficient number, since it is larger than the sum of its proper divisors (14008072).

18601316 is a wasteful number, since it uses less digits than its factorization.

18601316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8158 (or 8156 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18601316 is about 4312.9242979677. The cubic root of 18601316 is about 264.9605542331.

Adding to 18601316 its reverse (61310681), we get a palindrome (79911997).

The spelling of 18601316 in words is "eighteen million, six hundred one thousand, three hundred sixteen".