18094779433 has 2 divisors, whose sum is σ = 18094779434. Its totient is φ = 18094779432.

The previous prime is 18094779289. The next prime is 18094779467. The reversal of 18094779433 is 33497749081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17653905424 + 440874009 = 132868^2 + 20997^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18094779433 is a prime.

It is not a weakly prime, because it can be changed into another prime (48094779433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9047389716 + 9047389717.

It is an arithmetic number, because the mean of its divisors is an integer number (9047389717).

Almost surely, 2^18094779433 is an apocalyptic number.

It is an amenable number.

18094779433 is a deficient number, since it is larger than the sum of its proper divisors (1).

18094779433 is an equidigital number, since it uses as much as digits as its factorization.

18094779433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4572288, while the sum is 55.

The spelling of 18094779433 in words is "eighteen billion, ninety-four million, seven hundred seventy-nine thousand, four hundred thirty-three".