6431864947 has 16 divisors (see below), whose sum is σ = 6564096000. Its totient is φ = 6301018944.

The previous prime is 6431864941. The next prime is 6431864953. The reversal of 6431864947 is 7494681346.

It is an interprime number because it is at equal distance from previous prime (6431864941) and next prime (6431864953).

It is not a de Polignac number, because 6431864947 - 2³ = 6431864939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6431864894 and 6431864903.

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, 13427454 + ... + 13427932.

It is an arithmetic number, because the mean of its divisors is an integer number (410256000).

Almost surely, 2^6431864947 is an apocalyptic number.

6431864947 is a deficient number, since it is larger than the sum of its proper divisors (132231053).

6431864947 is a wasteful number, since it uses less digits than its factorization.

6431864947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410.

The product of its digits is 3483648, while the sum is 52.

The square root of 6431864947 is about 80198.9086397066. The cubic root of 6431864947 is about 1859.7117666249.

The spelling of 6431864947 in words is "six billion, four hundred thirty-one million, eight hundred sixty-four thousand, nine hundred forty-seven".