6319994121 has 24 divisors (see below), whose sum is σ = 10604045504. Its totient is φ = 3552219360.

The previous prime is 6319994117. The next prime is 6319994143. The reversal of 6319994121 is 1214999136.

6319994121 is a `hidden beast` number, since 631 + 9 + 9 + 9 + 4 + 1 + 2 + 1 = 666.

6319994121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6319994121 - 2² = 6319994117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6319994321) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 818431 + ... + 826116.

Almost surely, 2^6319994121 is an apocalyptic number.

6319994121 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

6319994121 is a deficient number, since it is larger than the sum of its proper divisors (4284051383).

6319994121 is a wasteful number, since it uses less digits than its factorization.

6319994121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1644621 (or 1644618 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 6319994121 is about 79498.3906818245. The cubic root of 6319994121 is about 1848.8665197898.

The spelling of 6319994121 in words is "six billion, three hundred nineteen million, nine hundred ninety-four thousand, one hundred twenty-one".