6465818838 has 8 divisors (see below), whose sum is σ = 12931637688. Its totient is φ = 2155272944.

The previous prime is 6465818837. The next prime is 6465818839. The reversal of 6465818838 is 8388185646.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6465818837) and next prime (6465818839).

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

6465818838 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6465818833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538818231 + ... + 538818242.

It is an arithmetic number, because the mean of its divisors is an integer number (1616454711).

Almost surely, 2^6465818838 is an apocalyptic number.

6465818838 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6465818838 is a wasteful number, since it uses less digits than its factorization.

6465818838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077636478.

The product of its digits is 8847360, while the sum is 57.

The square root of 6465818838 is about 80410.3154949662. The cubic root of 6465818838 is about 1862.9785050919.

The spelling of 6465818838 in words is "six billion, four hundred sixty-five million, eight hundred eighteen thousand, eight hundred thirty-eight".