18202044349 has 2 divisors, whose sum is σ = 18202044350. Its totient is φ = 18202044348.

The previous prime is 18202044319. The next prime is 18202044353. The reversal of 18202044349 is 94344020281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14564145124 + 3637899225 = 120682^2 + 60315^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18202044349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18202044319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9101022174 + 9101022175.

It is an arithmetic number, because the mean of its divisors is an integer number (9101022175).

Almost surely, 2^18202044349 is an apocalyptic number.

It is an amenable number.

18202044349 is a deficient number, since it is larger than the sum of its proper divisors (1).

18202044349 is an equidigital number, since it uses as much as digits as its factorization.

18202044349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 18202044349 in words is "eighteen billion, two hundred two million, forty-four thousand, three hundred forty-nine".