18226859801 has 2 divisors, whose sum is σ = 18226859802. Its totient is φ = 18226859800.

The previous prime is 18226859741. The next prime is 18226859857. The reversal of 18226859801 is 10895862281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17509905625 + 716954176 = 132325^2 + 26776^2 .

It is a cyclic number.

It is not a de Polignac number, because 18226859801 - 2²⁶ = 18159750937 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18226859801.

It is not a weakly prime, because it can be changed into another prime (18226859881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9113429900 + 9113429901.

It is an arithmetic number, because the mean of its divisors is an integer number (9113429901).

Almost surely, 2^18226859801 is an apocalyptic number.

It is an amenable number.

18226859801 is a deficient number, since it is larger than the sum of its proper divisors (1).

18226859801 is an equidigital number, since it uses as much as digits as its factorization.

18226859801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 50.

The spelling of 18226859801 in words is "eighteen billion, two hundred twenty-six million, eight hundred fifty-nine thousand, eight hundred one".