6448394236 has 24 divisors (see below), whose sum is σ = 11954416320. Its totient is φ = 3033034752.

The previous prime is 6448394233. The next prime is 6448394243. The reversal of 6448394236 is 6324938446.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 6448394236.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448394233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121245 + ... + 166123.

It is an arithmetic number, because the mean of its divisors is an integer number (498100680).

Almost surely, 2^6448394236 is an apocalyptic number.

It is an amenable number.

6448394236 is a deficient number, since it is larger than the sum of its proper divisors (5506022084).

6448394236 is a wasteful number, since it uses less digits than its factorization.

6448394236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47013 (or 47011 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 49.

The square root of 6448394236 is about 80301.8943487637. The cubic root of 6448394236 is about 1861.3034987433.

The spelling of 6448394236 in words is "six billion, four hundred forty-eight million, three hundred ninety-four thousand, two hundred thirty-six".