1441643864 has 16 divisors (see below), whose sum is σ = 2820607920. Its totient is φ = 689481760.

The previous prime is 1441643837. The next prime is 1441643897. The reversal of 1441643864 is 4683461441.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917327 + ... + 3917694.

It is an arithmetic number, because the mean of its divisors is an integer number (176287995).

Almost surely, 2^1441643864 is an apocalyptic number.

It is an amenable number.

1441643864 is a deficient number, since it is larger than the sum of its proper divisors (1378964056).

1441643864 is a wasteful number, since it uses less digits than its factorization.

1441643864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7835050 (or 7835046 counting only the distinct ones).

The product of its digits is 221184, while the sum is 41.

The square root of 1441643864 is about 37968.9855540018. The cubic root of 1441643864 is about 1129.6727754843.

The spelling of 1441643864 in words is "one billion, four hundred forty-one million, six hundred forty-three thousand, eight hundred sixty-four".