18284263213 has 2 divisors, whose sum is σ = 18284263214. Its totient is φ = 18284263212.

The previous prime is 18284263187. The next prime is 18284263237. The reversal of 18284263213 is 31236248281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10617859849 + 7666403364 = 103043^2 + 87558^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18284263213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18284263813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9142131606 + 9142131607.

It is an arithmetic number, because the mean of its divisors is an integer number (9142131607).

Almost surely, 2^18284263213 is an apocalyptic number.

It is an amenable number.

18284263213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18284263213 is an equidigital number, since it uses as much as digits as its factorization.

18284263213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 40.

The spelling of 18284263213 in words is "eighteen billion, two hundred eighty-four million, two hundred sixty-three thousand, two hundred thirteen".