18796213 has 2 divisors, whose sum is σ = 18796214. Its totient is φ = 18796212.

The previous prime is 18796189. The next prime is 18796229. The reversal of 18796213 is 31269781.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12124324 + 6671889 = 3482^2 + 2583^2 .

It is an emirp because it is prime and its reverse (31269781) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18796213 - 2⁵ = 18796181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18793213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9398106 + 9398107.

It is an arithmetic number, because the mean of its divisors is an integer number (9398107).

Almost surely, 2^18796213 is an apocalyptic number.

It is an amenable number.

18796213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18796213 is an equidigital number, since it uses as much as digits as its factorization.

18796213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 37.

The square root of 18796213 is about 4335.4599525310. The cubic root of 18796213 is about 265.8827238499.

The spelling of 18796213 in words is "eighteen million, seven hundred ninety-six thousand, two hundred thirteen".