18868301 has 2 divisors, whose sum is σ = 18868302. Its totient is φ = 18868300.

The previous prime is 18868279. The next prime is 18868309. The reversal of 18868301 is 10386881.

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., 15721225 + 3147076 = 3965^2 + 1774^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18868301 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18868309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9434150 + 9434151.

It is an arithmetic number, because the mean of its divisors is an integer number (9434151).

Almost surely, 2^18868301 is an apocalyptic number.

It is an amenable number.

18868301 is a deficient number, since it is larger than the sum of its proper divisors (1).

18868301 is an equidigital number, since it uses as much as digits as its factorization.

18868301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 35.

The square root of 18868301 is about 4343.7657625613. The cubic root of 18868301 is about 266.2221983064. Note that the first 3 decimals are identical.

The spelling of 18868301 in words is "eighteen million, eight hundred sixty-eight thousand, three hundred one".