18350166833 has 2 divisors, whose sum is σ = 18350166834. Its totient is φ = 18350166832.

The previous prime is 18350166823. The next prime is 18350166859. The reversal of 18350166833 is 33866105381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12059773489 + 6290393344 = 109817^2 + 79312^2 .

It is a cyclic number.

It is not a de Polignac number, because 18350166833 - 2¹² = 18350162737 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18350166823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9175083416 + 9175083417.

It is an arithmetic number, because the mean of its divisors is an integer number (9175083417).

Almost surely, 2^18350166833 is an apocalyptic number.

It is an amenable number.

18350166833 is a deficient number, since it is larger than the sum of its proper divisors (1).

18350166833 is an equidigital number, since it uses as much as digits as its factorization.

18350166833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 18350166833 in words is "eighteen billion, three hundred fifty million, one hundred sixty-six thousand, eight hundred thirty-three".