18044040733 has 2 divisors, whose sum is σ = 18044040734. Its totient is φ = 18044040732.

The previous prime is 18044040719. The next prime is 18044040757. The reversal of 18044040733 is 33704044081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17437994809 + 606045924 = 132053^2 + 24618^2 .

It is a cyclic number.

It is not a de Polignac number, because 18044040733 - 2²¹ = 18041943581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18044040433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9022020366 + 9022020367.

It is an arithmetic number, because the mean of its divisors is an integer number (9022020367).

Almost surely, 2^18044040733 is an apocalyptic number.

It is an amenable number.

18044040733 is a deficient number, since it is larger than the sum of its proper divisors (1).

18044040733 is an equidigital number, since it uses as much as digits as its factorization.

18044040733 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 18044040733 in words is "eighteen billion, forty-four million, forty thousand, seven hundred thirty-three".