6358644994 has 16 divisors (see below), whose sum is σ = 10812271680. Its totient is φ = 2780298000.

The previous prime is 6358644991. The next prime is 6358645019. The reversal of 6358644994 is 4994468536.

It is not an unprimeable number, because it can be changed into a prime (6358644991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6435382 + ... + 6436369.

It is an arithmetic number, because the mean of its divisors is an integer number (675766980).

Almost surely, 2^6358644994 is an apocalyptic number.

6358644994 is a deficient number, since it is larger than the sum of its proper divisors (4453626686).

6358644994 is a wasteful number, since it uses less digits than its factorization.

6358644994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12871785.

The product of its digits is 22394880, while the sum is 58.

The square root of 6358644994 is about 79741.1123198065. The cubic root of 6358644994 is about 1852.6278694162.

The spelling of 6358644994 in words is "six billion, three hundred fifty-eight million, six hundred forty-four thousand, nine hundred ninety-four".