1444649472 has 160 divisors (see below), whose sum is σ = 4887484800. Its totient is φ = 412729344.

The previous prime is 1444649441. The next prime is 1444649483. The reversal of 1444649472 is 2749464441.

1444649472 is a `hidden beast` number, since 144 + 464 + 9 + 47 + 2 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89304 + ... + 104232.

It is an arithmetic number, because the mean of its divisors is an integer number (30546780).

Almost surely, 2^1444649472 is an apocalyptic number.

1444649472 is a gapful number since it is divisible by the number (12) 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 1444649472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2443742400).

1444649472 is an abundant number, since it is smaller than the sum of its proper divisors (3442835328).

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

1444649472 is an equidigital number, since it uses as much as digits as its factorization.

1444649472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14963 (or 14941 counting only the distinct ones).

The product of its digits is 774144, while the sum is 45.

The square root of 1444649472 is about 38008.5447235224. The cubic root of 1444649472 is about 1130.4572957918.

The spelling of 1444649472 in words is "one billion, four hundred forty-four million, six hundred forty-nine thousand, four hundred seventy-two".