1722394644 has 48 divisors (see below), whose sum is σ = 4260715200. Its totient is φ = 539675136.

The previous prime is 1722394633. The next prime is 1722394673. The reversal of 1722394644 is 4464932271.

It is a junction number, because it is equal to n+sod(n) for n = 1722394596 and 1722394605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170322 + ... + 180150.

It is an arithmetic number, because the mean of its divisors is an integer number (88764900).

Almost surely, 2^1722394644 is an apocalyptic number.

It is an amenable number.

1722394644 is an abundant number, since it is smaller than the sum of its proper divisors (2538320556).

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

1722394644 is a wasteful number, since it uses less digits than its factorization.

1722394644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10712 (or 10710 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 1722394644 is about 41501.7426622064. The cubic root of 1722394644 is about 1198.7010583550.

The spelling of 1722394644 in words is "one billion, seven hundred twenty-two million, three hundred ninety-four thousand, six hundred forty-four".