6438806498 has 16 divisors (see below), whose sum is σ = 9894709440. Its totient is φ = 3140750256.

The previous prime is 6438806497. The next prime is 6438806503. The reversal of 6438806498 is 8946088346.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (6438806497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27536 + ... + 116772.

It is an arithmetic number, because the mean of its divisors is an integer number (618419340).

Almost surely, 2^6438806498 is an apocalyptic number.

6438806498 is a deficient number, since it is larger than the sum of its proper divisors (3455902942).

6438806498 is a wasteful number, since it uses less digits than its factorization.

6438806498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90121.

The product of its (nonzero) digits is 7962624, while the sum is 56.

The square root of 6438806498 is about 80242.1740607768. The cubic root of 6438806498 is about 1860.3805536135.

The spelling of 6438806498 in words is "six billion, four hundred thirty-eight million, eight hundred six thousand, four hundred ninety-eight".