18130166213 has 2 divisors, whose sum is σ = 18130166214. Its totient is φ = 18130166212.

The previous prime is 18130166203. The next prime is 18130166221. The reversal of 18130166213 is 31266103181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14003645569 + 4126520644 = 118337^2 + 64238^2 .

It is a cyclic number.

It is not a de Polignac number, because 18130166213 - 2¹⁸ = 18129904069 is a prime.

It is a super-2 number, since 2×18130166213² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18130166213.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18130166203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9065083106 + 9065083107.

It is an arithmetic number, because the mean of its divisors is an integer number (9065083107).

Almost surely, 2^18130166213 is an apocalyptic number.

It is an amenable number.

18130166213 is a deficient number, since it is larger than the sum of its proper divisors (1).

18130166213 is an equidigital number, since it uses as much as digits as its factorization.

18130166213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 32.

Adding to 18130166213 its reverse (31266103181), we get a palindrome (49396269394).

The spelling of 18130166213 in words is "eighteen billion, one hundred thirty million, one hundred sixty-six thousand, two hundred thirteen".