198644924416 has 51 divisors (see below), whose sum is σ = 397515143433. Its totient is φ = 99265413120.

The previous prime is 198644924383. The next prime is 198644924419. The reversal of 198644924416 is 614429446891.

It is a happy number.

The square root of 198644924416 is 445696.

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

It can be written as a sum of positive squares in only one way, i.e., 228130816 + 198416793600 = 15104^2 + 445440^2 .

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198644924419) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 114097306 + ... + 114099046.

Almost surely, 2^198644924416 is an apocalyptic number.

198644924416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

198644924416 is the 445696-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 198644924416

198644924416 is an abundant number, since it is smaller than the sum of its proper divisors (198870219017).

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

198644924416 is an frugal number, since it uses more digits than its factorization.

198644924416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3514 (or 1743 counting only the distinct ones).

The product of its digits is 11943936, while the sum is 58.

The spelling of 198644924416 in words is "one hundred ninety-eight billion, six hundred forty-four million, nine hundred twenty-four thousand, four hundred sixteen".