6431864946 has 32 divisors (see below), whose sum is σ = 14455566720. Its totient is φ = 1892989824.

The previous prime is 6431864941. The next prime is 6431864953. The reversal of 6431864946 is 6494681346.

It is not an unprimeable number, because it can be changed into a prime (6431864941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1790811 + ... + 1794398.

It is an arithmetic number, because the mean of its divisors is an integer number (451736460).

Almost surely, 2^6431864946 is an apocalyptic number.

6431864946 is an abundant number, since it is smaller than the sum of its proper divisors (8023701774).

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

6431864946 is a wasteful number, since it uses less digits than its factorization.

6431864946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3585250.

The product of its digits is 2985984, while the sum is 51.

The square root of 6431864946 is about 80198.9086334721. The cubic root of 6431864946 is about 1859.7117665285.

The spelling of 6431864946 in words is "six billion, four hundred thirty-one million, eight hundred sixty-four thousand, nine hundred forty-six".