1444253632 has 56 divisors (see below), whose sum is σ = 3043635264. Its totient is φ = 677609472.

The previous prime is 1444253611. The next prime is 1444253633. The reversal of 1444253632 is 2363524441.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444253633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397488 + ... + 401104.

Almost surely, 2^1444253632 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 1444253632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1521817632).

1444253632 is an abundant number, since it is smaller than the sum of its proper divisors (1599381632).

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

1444253632 is a wasteful number, since it uses less digits than its factorization.

1444253632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4013 (or 4003 counting only the distinct ones).

The product of its digits is 69120, while the sum is 34.

The square root of 1444253632 is about 38003.3371166270. The cubic root of 1444253632 is about 1130.3540363503.

The spelling of 1444253632 in words is "one billion, four hundred forty-four million, two hundred fifty-three thousand, six hundred thirty-two".