6451493876 has 12 divisors (see below), whose sum is σ = 11291404740. Its totient is φ = 3225378240.

The previous prime is 6451493849. The next prime is 6451493879. The reversal of 6451493876 is 6783941546.

It can be written as a sum of positive squares in 2 ways, for example, as 3681576976 + 2769916900 = 60676^2 + 52630^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6451493879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50735 + ... + 124406.

It is an arithmetic number, because the mean of its divisors is an integer number (940950395).

Almost surely, 2^6451493876 is an apocalyptic number.

It is an amenable number.

6451493876 is a deficient number, since it is larger than the sum of its proper divisors (4839910864).

6451493876 is a wasteful number, since it uses less digits than its factorization.

6451493876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184354 (or 184352 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 53.

The square root of 6451493876 is about 80321.1919483271. The cubic root of 6451493876 is about 1861.6016839141.

The spelling of 6451493876 in words is "six billion, four hundred fifty-one million, four hundred ninety-three thousand, eight hundred seventy-six".