18808301 has 2 divisors, whose sum is σ = 18808302. Its totient is φ = 18808300.

The previous prime is 18808297. The next prime is 18808303. The reversal of 18808301 is 10380881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12432676 + 6375625 = 3526^2 + 2525^2 .

It is a cyclic number.

It is not a de Polignac number, because 18808301 - 2² = 18808297 is a prime.

It is a Sophie Germain prime.

Together with 18808303, it forms a pair of twin primes.

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 (18808303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9404150 + 9404151.

It is an arithmetic number, because the mean of its divisors is an integer number (9404151).

Almost surely, 2^18808301 is an apocalyptic number.

18808301 is the 1940-th centered decagonal number.

It is an amenable number.

18808301 is a deficient number, since it is larger than the sum of its proper divisors (1).

18808301 is an equidigital number, since it uses as much as digits as its factorization.

18808301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 29.

The square root of 18808301 is about 4336.8538135381. The cubic root of 18808301 is about 265.9397087619.

The spelling of 18808301 in words is "eighteen million, eight hundred eight thousand, three hundred one".