998164842724 has 27 divisors (see below), whose sum is σ = 2032006904067. Its totient is φ = 427778938104.

The previous prime is 998164842721. The next prime is 998164842743. The reversal of 998164842724 is 427248461899.

The square root of 998164842724 is 999082.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (998164842721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 13951467 + ... + 14022829.

Almost surely, 2^998164842724 is an apocalyptic number.

998164842724 is the 999082-nd square number.

It is an amenable number.

998164842724 is an abundant number, since it is smaller than the sum of its proper divisors (1033842061343).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

998164842724 is an frugal number, since it uses more digits than its factorization.

998164842724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142744 (or 71372 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 64.

Multiplying 998164842724 by its sum of digits (64), we get a square (63882549934336 = 7992656²).

The spelling of 998164842724 in words is "nine hundred ninety-eight billion, one hundred sixty-four million, eight hundred forty-two thousand, seven hundred twenty-four".