18876313 has 2 divisors, whose sum is σ = 18876314. Its totient is φ = 18876312.

The previous prime is 18876301. The next prime is 18876317. The reversal of 18876313 is 31367881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13344409 + 5531904 = 3653^2 + 2352^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18876313 is a prime.

It is not a weakly prime, because it can be changed into another prime (18876317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9438156 + 9438157.

It is an arithmetic number, because the mean of its divisors is an integer number (9438157).

Almost surely, 2^18876313 is an apocalyptic number.

It is an amenable number.

18876313 is a deficient number, since it is larger than the sum of its proper divisors (1).

18876313 is an equidigital number, since it uses as much as digits as its factorization.

18876313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 37.

The square root of 18876313 is about 4344.6879059375. The cubic root of 18876313 is about 266.2598747320.

The spelling of 18876313 in words is "eighteen million, eight hundred seventy-six thousand, three hundred thirteen".