18466337 has 2 divisors, whose sum is σ = 18466338. Its totient is φ = 18466336.

The previous prime is 18466333. The next prime is 18466361. The reversal of 18466337 is 73366481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13608721 + 4857616 = 3689^2 + 2204^2 .

It is a cyclic number.

It is not a de Polignac number, because 18466337 - 2² = 18466333 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18466337.

It is not a weakly prime, because it can be changed into another prime (18466333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9233168 + 9233169.

It is an arithmetic number, because the mean of its divisors is an integer number (9233169).

Almost surely, 2^18466337 is an apocalyptic number.

It is an amenable number.

18466337 is a deficient number, since it is larger than the sum of its proper divisors (1).

18466337 is an equidigital number, since it uses as much as digits as its factorization.

18466337 is an evil number, because the sum of its binary digits is even.

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

The square root of 18466337 is about 4297.2476074809. The cubic root of 18466337 is about 264.3181092295.

The spelling of 18466337 in words is "eighteen million, four hundred sixty-six thousand, three hundred thirty-seven".