998844318629 has 2 divisors, whose sum is σ = 998844318630. Its totient is φ = 998844318628.

The previous prime is 998844318557. The next prime is 998844318683. The reversal of 998844318629 is 926813448899.

998844318629 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 973793976100 + 25050342529 = 986810^2 + 158273^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-998844318629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (998844318029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499422159314 + 499422159315.

It is an arithmetic number, because the mean of its divisors is an integer number (499422159315).

Almost surely, 2^998844318629 is an apocalyptic number.

It is an amenable number.

998844318629 is a deficient number, since it is larger than the sum of its proper divisors (1).

998844318629 is an equidigital number, since it uses as much as digits as its factorization.

998844318629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 214990848, while the sum is 71.

The spelling of 998844318629 in words is "nine hundred ninety-eight billion, eight hundred forty-four million, three hundred eighteen thousand, six hundred twenty-nine".