18466705937 has 2 divisors, whose sum is σ = 18466705938. Its totient is φ = 18466705936.

The previous prime is 18466705931. The next prime is 18466705963. The reversal of 18466705937 is 73950766481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14677564801 + 3789141136 = 121151^2 + 61556^2 .

It is a cyclic number.

It is not a de Polignac number, because 18466705937 - 2¹⁰ = 18466704913 is a prime.

It is not a weakly prime, because it can be changed into another prime (18466705931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9233352968 + 9233352969.

It is an arithmetic number, because the mean of its divisors is an integer number (9233352969).

Almost surely, 2^18466705937 is an apocalyptic number.

It is an amenable number.

18466705937 is a deficient number, since it is larger than the sum of its proper divisors (1).

18466705937 is an equidigital number, since it uses as much as digits as its factorization.

18466705937 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 18466705937 in words is "eighteen billion, four hundred sixty-six million, seven hundred five thousand, nine hundred thirty-seven".