18316601 has 2 divisors, whose sum is σ = 18316602. Its totient is φ = 18316600.

The previous prime is 18316561. The next prime is 18316621. The reversal of 18316601 is 10661381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13249600 + 5067001 = 3640^2 + 2251^2 .

It is a cyclic number.

It is not a de Polignac number, because 18316601 - 2⁶ = 18316537 is a prime.

It is not a weakly prime, because it can be changed into another prime (18316621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9158300 + 9158301.

It is an arithmetic number, because the mean of its divisors is an integer number (9158301).

Almost surely, 2^18316601 is an apocalyptic number.

It is an amenable number.

18316601 is a deficient number, since it is larger than the sum of its proper divisors (1).

18316601 is an equidigital number, since it uses as much as digits as its factorization.

18316601 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18316601 is about 4279.7898312884. The cubic root of 18316601 is about 263.6017535764.

Adding to 18316601 its reverse (10661381), we get a palindrome (28977982).

The spelling of 18316601 in words is "eighteen million, three hundred sixteen thousand, six hundred one".