1791998224 has 45 divisors (see below), whose sum is σ = 3670941477. Its totient is φ = 847317312.

The previous prime is 1791998123. The next prime is 1791998227. The reversal of 1791998224 is 4228991971.

The square root of 1791998224 is 42332.

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., 157251600 + 1634746624 = 12540^2 + 40432^2 .

It is a super-2 number, since 2×1791998224² = 6422515269638308352, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1791998227) 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, 3216954 + ... + 3217510.

Almost surely, 2^1791998224 is an apocalyptic number.

1791998224 is the 42332-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1791998224

1791998224 is an abundant number, since it is smaller than the sum of its proper divisors (1878943253).

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

1791998224 is an frugal number, since it uses more digits than its factorization.

1791998224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1160 (or 578 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The cubic root of 1791998224 is about 1214.6351874866.

The spelling of 1791998224 in words is "one billion, seven hundred ninety-one million, nine hundred ninety-eight thousand, two hundred twenty-four".