998844318644 has 12 divisors (see below), whose sum is σ = 1747991259168. Its totient is φ = 499418244600.

The previous prime is 998844318629. The next prime is 998844318683. The reversal of 998844318644 is 446813448899.

It is a happy number.

998844318644 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361322 + ... + 1458849.

It is an arithmetic number, because the mean of its divisors is an integer number (145665938264).

Almost surely, 2^998844318644 is an apocalyptic number.

It is an amenable number.

998844318644 is a deficient number, since it is larger than the sum of its proper divisors (749146940524).

998844318644 is a wasteful number, since it uses less digits than its factorization.

998844318644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1957366 (or 1957364 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 68.

The spelling of 998844318644 in words is "nine hundred ninety-eight billion, eight hundred forty-four million, three hundred eighteen thousand, six hundred forty-four".