6448861823 has 4 divisors (see below), whose sum is σ = 6545113560. Its totient is φ = 6352610088.

The previous prime is 6448861799. The next prime is 6448861847. The reversal of 6448861823 is 3281688446.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (6448861799) and next prime (6448861847).

It is a cyclic number.

It is not a de Polignac number, because 6448861823 - 2⁶ = 6448861759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448860823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48125768 + ... + 48125901.

It is an arithmetic number, because the mean of its divisors is an integer number (1636278390).

Almost surely, 2^6448861823 is an apocalyptic number.

6448861823 is a deficient number, since it is larger than the sum of its proper divisors (96251737).

6448861823 is an equidigital number, since it uses as much as digits as its factorization.

6448861823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96251736.

The product of its digits is 1769472, while the sum is 50.

The square root of 6448861823 is about 80304.8057279264. The cubic root of 6448861823 is about 1861.3484867022.

The spelling of 6448861823 in words is "six billion, four hundred forty-eight million, eight hundred sixty-one thousand, eight hundred twenty-three".