8331640365 has 8 divisors (see below), whose sum is σ = 13330624608. Its totient is φ = 4443541520.

The previous prime is 8331640327. The next prime is 8331640367. The reversal of 8331640365 is 5630461338.

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

It is not a de Polignac number, because 8331640365 - 2⁷ = 8331640237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8331640367) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 277721331 + ... + 277721360.

It is an arithmetic number, because the mean of its divisors is an integer number (1666328076).

Almost surely, 2^8331640365 is an apocalyptic number.

It is an amenable number.

8331640365 is a deficient number, since it is larger than the sum of its proper divisors (4998984243).

8331640365 is a wasteful number, since it uses less digits than its factorization.

8331640365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555442699.

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 8331640365 is about 91277.8196770716. The cubic root of 8331640365 is about 2027.2633628878.

The spelling of 8331640365 in words is "eight billion, three hundred thirty-one million, six hundred forty thousand, three hundred sixty-five".