6387982994 has 8 divisors (see below), whose sum is σ = 9587128908. Its totient is φ = 3192273360.

The previous prime is 6387982987. The next prime is 6387983023. The reversal of 6387982994 is 4992897836.

It can be written as a sum of positive squares in 2 ways, for example, as 6219372769 + 168610225 = 78863^2 + 12985^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 6387982994.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 854417 + ... + 861860.

Almost surely, 2^6387982994 is an apocalyptic number.

6387982994 is a deficient number, since it is larger than the sum of its proper divisors (3199145914).

6387982994 is a wasteful number, since it uses less digits than its factorization.

6387982994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718140.

The product of its digits is 47029248, while the sum is 65.

The square root of 6387982994 is about 79924.8584233967. The cubic root of 6387982994 is about 1855.4727636955.

The spelling of 6387982994 in words is "six billion, three hundred eighty-seven million, nine hundred eighty-two thousand, nine hundred ninety-four".