1044749664 has 240 divisors, whose sum is σ = 3565368576. Its totient is φ = 293932800.

The previous prime is 1044749653. The next prime is 1044749681. The reversal of 1044749664 is 4669474401.

1044749664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1044749664² = 2183003720856225792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1287819 + ... + 1288629.

Almost surely, 2^1044749664 is an apocalyptic number.

1044749664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1044749664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782684288).

1044749664 is an abundant number, since it is smaller than the sum of its proper divisors (2520618912).

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

1044749664 is an equidigital number, since it uses as much as digits as its factorization.

1044749664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911 (or 894 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 45.

The square root of 1044749664 is about 32322.5875201847. The cubic root of 1044749664 is about 1014.6994229163.

The spelling of 1044749664 in words is "one billion, forty-four million, seven hundred forty-nine thousand, six hundred sixty-four".