1573945344 has 160 divisors (see below), whose sum is σ = 4710262590. Its totient is φ = 523763712.

The previous prime is 1573945343. The next prime is 1573945379. The reversal of 1573945344 is 4435493751.

1573945344 is a `hidden beast` number, since 1 + 573 + 9 + 45 + 34 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1275346944 + 298598400 = 35712^2 + 17280^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1573945344.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1573945343) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2653912 + ... + 2654504.

Almost surely, 2^1573945344 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1573945344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2355131295).

1573945344 is an abundant number, since it is smaller than the sum of its proper divisors (3136317246).

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

1573945344 is an frugal number, since it uses more digits than its factorization.

1573945344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635 (or 598 counting only the distinct ones).

The product of its digits is 907200, while the sum is 45.

The square root of 1573945344 is about 39672.9800241928. The cubic root of 1573945344 is about 1163.2236293807.

The spelling of 1573945344 in words is "one billion, five hundred seventy-three million, nine hundred forty-five thousand, three hundred forty-four".