1440895641 has 4 divisors (see below), whose sum is σ = 1921194192. Its totient is φ = 960597092.

The previous prime is 1440895637. The next prime is 1440895649. The reversal of 1440895641 is 1465980441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1440895641 - 2² = 1440895637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1440895593 and 1440895602.

It is not an unprimeable number, because it can be changed into a prime (1440895649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240149271 + ... + 240149276.

It is an arithmetic number, because the mean of its divisors is an integer number (480298548).

Almost surely, 2^1440895641 is an apocalyptic number.

It is an amenable number.

1440895641 is a deficient number, since it is larger than the sum of its proper divisors (480298551).

1440895641 is an equidigital number, since it uses as much as digits as its factorization.

1440895641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480298550.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 1440895641 is about 37959.1311939565. The cubic root of 1440895641 is about 1129.4773057048.

The spelling of 1440895641 in words is "one billion, four hundred forty million, eight hundred ninety-five thousand, six hundred forty-one".