6463391874 has 64 divisors (see below), whose sum is σ = 14323101696. Its totient is φ = 1934025984.

The previous prime is 6463391833. The next prime is 6463391917. The reversal of 6463391874 is 4781933646.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 857229 + ... + 864735.

It is an arithmetic number, because the mean of its divisors is an integer number (223798464).

Almost surely, 2^6463391874 is an apocalyptic number.

6463391874 is an abundant number, since it is smaller than the sum of its proper divisors (7859709822).

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

6463391874 is a wasteful number, since it uses less digits than its factorization.

6463391874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7919.

The product of its digits is 2612736, while the sum is 51.

The square root of 6463391874 is about 80395.2229550985. Note that the first 3 decimals coincide. The cubic root of 6463391874 is about 1862.7453844462.

The spelling of 6463391874 in words is "six billion, four hundred sixty-three million, three hundred ninety-one thousand, eight hundred seventy-four".