6494443158 has 16 divisors (see below), whose sum is σ = 14844441600. Its totient is φ = 1855555176.

The previous prime is 6494443157. The next prime is 6494443159. The reversal of 6494443158 is 8513444946.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (6494443157) and next prime (6494443159).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6494443157) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77314758 + ... + 77314841.

It is an arithmetic number, because the mean of its divisors is an integer number (927777600).

Almost surely, 2^6494443158 is an apocalyptic number.

6494443158 is an abundant number, since it is smaller than the sum of its proper divisors (8349998442).

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

6494443158 is a wasteful number, since it uses less digits than its factorization.

6494443158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154629611.

The product of its digits is 1658880, while the sum is 48.

The square root of 6494443158 is about 80588.1080433087. The cubic root of 6494443158 is about 1865.7236069202.

The spelling of 6494443158 in words is "six billion, four hundred ninety-four million, four hundred forty-three thousand, one hundred fifty-eight".