6938467994 has 16 divisors (see below), whose sum is σ = 11251572000. Its totient is φ = 3197813904.

The previous prime is 6938467973. The next prime is 6938468021. The reversal of 6938467994 is 4997648396.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 6938467994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2466044 + ... + 2468855.

It is an arithmetic number, because the mean of its divisors is an integer number (703223250).

Almost surely, 2^6938467994 is an apocalyptic number.

6938467994 is a deficient number, since it is larger than the sum of its proper divisors (4313104006).

6938467994 is a wasteful number, since it uses less digits than its factorization.

6938467994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4934957.

The product of its digits is 70543872, while the sum is 65.

The square root of 6938467994 is about 83297.4669122657. The cubic root of 6938467994 is about 1907.3096076061.

The spelling of 6938467994 in words is "six billion, nine hundred thirty-eight million, four hundred sixty-seven thousand, nine hundred ninety-four".