6491248944 has 40 divisors (see below), whose sum is σ = 16819762752. Its totient is φ = 2157207360.

The previous prime is 6491248927. The next prime is 6491248949. The reversal of 6491248944 is 4498421946.

It is a happy number.

It is a super-2 number, since 2×6491248944² = 84272625705962230272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6491248949) 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 7 ways as a sum of consecutive naturals, for example, 188394 + ... + 220169.

Almost surely, 2^6491248944 is an apocalyptic number.

It is an amenable number.

6491248944 is an abundant number, since it is smaller than the sum of its proper divisors (10328513808).

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

6491248944 is a wasteful number, since it uses less digits than its factorization.

6491248944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408905 (or 408899 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 6491248944 is about 80568.2874585280. The cubic root of 6491248944 is about 1865.4176788302.

The spelling of 6491248944 in words is "six billion, four hundred ninety-one million, two hundred forty-eight thousand, nine hundred forty-four".