38321649865 has 8 divisors (see below), whose sum is σ = 45992527560. Its totient is φ = 30652954752.

The previous prime is 38321649857. The next prime is 38321649929. The reversal of 38321649865 is 56894612383.

38321649865 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 2701504576 + 35620145289 = 51976^2 + 188733^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 38321649865 - 2³ = 38321649857 is a prime.

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, 506764 + ... + 577453.

It is an arithmetic number, because the mean of its divisors is an integer number (5749065945).

Almost surely, 2^38321649865 is an apocalyptic number.

It is an amenable number.

38321649865 is a deficient number, since it is larger than the sum of its proper divisors (7670877695).

38321649865 is a wasteful number, since it uses less digits than its factorization.

38321649865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091291.

The product of its digits is 7464960, while the sum is 55.

The spelling of 38321649865 in words is "thirty-eight billion, three hundred twenty-one million, six hundred forty-nine thousand, eight hundred sixty-five".