1444313140 has 24 divisors (see below), whose sum is σ = 3043787040. Its totient is φ = 575681568.

The previous prime is 1444313137. The next prime is 1444313161. The reversal of 1444313140 is 413134441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121930 + ... + 133249.

It is an arithmetic number, because the mean of its divisors is an integer number (126824460).

Almost surely, 2^1444313140 is an apocalyptic number.

1444313140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444313140 is an abundant number, since it is smaller than the sum of its proper divisors (1599473900).

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

1444313140 is a wasteful number, since it uses less digits than its factorization.

1444313140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255471 (or 255469 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1444313140 is about 38004.1200398062. The cubic root of 1444313140 is about 1130.3695609052.

Adding to 1444313140 its reverse (413134441), we get a palindrome (1857447581).

The spelling of 1444313140 in words is "one billion, four hundred forty-four million, three hundred thirteen thousand, one hundred forty".