18426373241 has 2 divisors, whose sum is σ = 18426373242. Its totient is φ = 18426373240.

The previous prime is 18426373237. The next prime is 18426373271. The reversal of 18426373241 is 14237362481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12860467216 + 5565906025 = 113404^2 + 74605^2 .

It is a cyclic number.

It is not a de Polignac number, because 18426373241 - 2² = 18426373237 is a prime.

It is not a weakly prime, because it can be changed into another prime (18426373271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9213186620 + 9213186621.

It is an arithmetic number, because the mean of its divisors is an integer number (9213186621).

Almost surely, 2^18426373241 is an apocalyptic number.

It is an amenable number.

18426373241 is a deficient number, since it is larger than the sum of its proper divisors (1).

18426373241 is an equidigital number, since it uses as much as digits as its factorization.

18426373241 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 41.

The spelling of 18426373241 in words is "eighteen billion, four hundred twenty-six million, three hundred seventy-three thousand, two hundred forty-one".