1440363641 has 8 divisors (see below), whose sum is σ = 1528637184. Its totient is φ = 1352484160.

The previous prime is 1440363601. The next prime is 1440363649. The reversal of 1440363641 is 1463630441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1440363641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1440363598 and 1440363607.

It is not an unprimeable number, because it can be changed into a prime (1440363649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90965 + ... + 105618.

It is an arithmetic number, because the mean of its divisors is an integer number (191079648).

Almost surely, 2^1440363641 is an apocalyptic number.

It is an amenable number.

1440363641 is a deficient number, since it is larger than the sum of its proper divisors (88273543).

1440363641 is a wasteful number, since it uses less digits than its factorization.

1440363641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197031.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 1440363641 is about 37952.1230104457. The cubic root of 1440363641 is about 1129.3382820132.

The spelling of 1440363641 in words is "one billion, four hundred forty million, three hundred sixty-three thousand, six hundred forty-one".