18630002172233 has 2 divisors, whose sum is σ = 18630002172234. Its totient is φ = 18630002172232.

The previous prime is 18630002172077. The next prime is 18630002172241. The reversal of 18630002172233 is 33227120003681.

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., 12152732849929 + 6477269322304 = 3486077^2 + 2545048^2 .

It is a cyclic number.

It is not a de Polignac number, because 18630002172233 - 2¹⁸ = 18630001910089 is a prime.

It is not a weakly prime, because it can be changed into another prime (18630002172263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9315001086116 + 9315001086117.

It is an arithmetic number, because the mean of its divisors is an integer number (9315001086117).

Almost surely, 2^{18630002172233} is an apocalyptic number.

It is an amenable number.

18630002172233 is a deficient number, since it is larger than the sum of its proper divisors (1).

18630002172233 is an equidigital number, since it uses as much as digits as its factorization.

18630002172233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 38.

The spelling of 18630002172233 in words is "eighteen trillion, six hundred thirty billion, two million, one hundred seventy-two thousand, two hundred thirty-three".