1444445880 has 32 divisors (see below), whose sum is σ = 4333338000. Its totient is φ = 385185536.

The previous prime is 1444445861. The next prime is 1444445887. The reversal of 1444445880 is 885444441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444445887) 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, 6018405 + ... + 6018644.

Almost surely, 2^1444445880 is an apocalyptic number.

1444445880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444445880 is an abundant number, since it is smaller than the sum of its proper divisors (2888892120).

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

1444445880 is a wasteful number, since it uses less digits than its factorization.

1444445880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12037063 (or 12037059 counting only the distinct ones).

The product of its (nonzero) digits is 327680, while the sum is 42.

The square root of 1444445880 is about 38005.8663892826. The cubic root of 1444445880 is about 1130.4041888204.

The spelling of 1444445880 in words is "one billion, four hundred forty-four million, four hundred forty-five thousand, eight hundred eighty".