18682901 has 2 divisors, whose sum is σ = 18682902. Its totient is φ = 18682900.

The previous prime is 18682849. The next prime is 18682907. The reversal of 18682901 is 10928681.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15171025 + 3511876 = 3895^2 + 1874^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18682901 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18682907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9341450 + 9341451.

It is an arithmetic number, because the mean of its divisors is an integer number (9341451).

Almost surely, 2^18682901 is an apocalyptic number.

It is an amenable number.

18682901 is a deficient number, since it is larger than the sum of its proper divisors (1).

18682901 is an equidigital number, since it uses as much as digits as its factorization.

18682901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 18682901 is about 4322.3721496419. The cubic root of 18682901 is about 265.3473598400.

The spelling of 18682901 in words is "eighteen million, six hundred eighty-two thousand, nine hundred one".