6446387814 has 16 divisors (see below), whose sum is σ = 13308672000. Its totient is φ = 2079479880.

The previous prime is 6446387807. The next prime is 6446387833. The reversal of 6446387814 is 4187836446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17328814 + ... + 17329185.

It is an arithmetic number, because the mean of its divisors is an integer number (831792000).

Almost surely, 2^6446387814 is an apocalyptic number.

6446387814 is an abundant number, since it is smaller than the sum of its proper divisors (6862284186).

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

6446387814 is a wasteful number, since it uses less digits than its factorization.

6446387814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34658035.

The product of its digits is 3096576, while the sum is 51.

The square root of 6446387814 is about 80289.4003838614. The cubic root of 6446387814 is about 1861.1104301252.

The spelling of 6446387814 in words is "six billion, four hundred forty-six million, three hundred eighty-seven thousand, eight hundred fourteen".