6431645434 has 8 divisors (see below), whose sum is σ = 10066923360. Its totient is φ = 3076004316.

The previous prime is 6431645399. The next prime is 6431645459. The reversal of 6431645434 is 4345461346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69909144 + ... + 69909235.

It is an arithmetic number, because the mean of its divisors is an integer number (1258365420).

Almost surely, 2^6431645434 is an apocalyptic number.

6431645434 is a deficient number, since it is larger than the sum of its proper divisors (3635277926).

6431645434 is a wasteful number, since it uses less digits than its factorization.

6431645434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139818404.

The product of its digits is 414720, while the sum is 40.

The square root of 6431645434 is about 80197.5400744936. The cubic root of 6431645434 is about 1859.6906096947.

The spelling of 6431645434 in words is "six billion, four hundred thirty-one million, six hundred forty-five thousand, four hundred thirty-four".