6491944412 has 6 divisors (see below), whose sum is σ = 11360902728. Its totient is φ = 3245972204.

The previous prime is 6491944397. The next prime is 6491944441. The reversal of 6491944412 is 2144491946.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811493048 + ... + 811493055.

It is an arithmetic number, because the mean of its divisors is an integer number (1893483788).

Almost surely, 2^6491944412 is an apocalyptic number.

It is an amenable number.

6491944412 is a deficient number, since it is larger than the sum of its proper divisors (4868958316).

6491944412 is a wasteful number, since it uses less digits than its factorization.

6491944412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622986107 (or 1622986105 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The square root of 6491944412 is about 80572.6033587100. The cubic root of 6491944412 is about 1865.4842963119.

The spelling of 6491944412 in words is "six billion, four hundred ninety-one million, nine hundred forty-four thousand, four hundred twelve".