18044743433 has 2 divisors, whose sum is σ = 18044743434. Its totient is φ = 18044743432.

The previous prime is 18044743427. The next prime is 18044743447. The reversal of 18044743433 is 33434744081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12407286544 + 5637456889 = 111388^2 + 75083^2 .

It is a cyclic number.

It is not a de Polignac number, because 18044743433 - 2²⁰ = 18043694857 is a prime.

It is a super-2 number, since 2×18044743433² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18044743463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9022371716 + 9022371717.

It is an arithmetic number, because the mean of its divisors is an integer number (9022371717).

Almost surely, 2^18044743433 is an apocalyptic number.

It is an amenable number.

18044743433 is a deficient number, since it is larger than the sum of its proper divisors (1).

18044743433 is an equidigital number, since it uses as much as digits as its factorization.

18044743433 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 41.

The spelling of 18044743433 in words is "eighteen billion, forty-four million, seven hundred forty-three thousand, four hundred thirty-three".