1444745331 has 24 divisors (see below), whose sum is σ = 2174019120. Its totient is φ = 923731200.

The previous prime is 1444745303. The next prime is 1444745353. The reversal of 1444745331 is 1335474441.

1444745331 is a `hidden beast` number, since 14 + 44 + 74 + 533 + 1 = 666.

It is not a de Polignac number, because 1444745331 - 2¹⁰ = 1444744307 is a prime.

It is a super-2 number, since 2×1444745331² = 4174578142892599122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1444743331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11410 + ... + 54951.

It is an arithmetic number, because the mean of its divisors is an integer number (90584130).

Almost surely, 2^1444745331 is an apocalyptic number.

1444745331 is a deficient number, since it is larger than the sum of its proper divisors (729273789).

1444745331 is a wasteful number, since it uses less digits than its factorization.

1444745331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66467 (or 66464 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 1444745331 is about 38009.8057216819. The cubic root of 1444745331 is about 1130.4822988833.

The spelling of 1444745331 in words is "one billion, four hundred forty-four million, seven hundred forty-five thousand, three hundred thirty-one".