18022793969 has 2 divisors, whose sum is σ = 18022793970. Its totient is φ = 18022793968.

The previous prime is 18022793963. The next prime is 18022793977. The reversal of 18022793969 is 96939722081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14189574400 + 3833219569 = 119120^2 + 61913^2 .

It is a cyclic number.

It is not a de Polignac number, because 18022793969 - 2⁸ = 18022793713 is a prime.

It is a super-2 number, since 2×18022793969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18022793963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9011396984 + 9011396985.

It is an arithmetic number, because the mean of its divisors is an integer number (9011396985).

Almost surely, 2^18022793969 is an apocalyptic number.

It is an amenable number.

18022793969 is a deficient number, since it is larger than the sum of its proper divisors (1).

18022793969 is an equidigital number, since it uses as much as digits as its factorization.

18022793969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2939328, while the sum is 56.

The spelling of 18022793969 in words is "eighteen billion, twenty-two million, seven hundred ninety-three thousand, nine hundred sixty-nine".