6438086233 has 4 divisors (see below), whose sum is σ = 6442399908. Its totient is φ = 6433772560.

The previous prime is 6438086219. The next prime is 6438086243. The reversal of 6438086233 is 3326808346.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3326808346 = 2 ⋅1663404173.

It can be written as a sum of positive squares in 2 ways, for example, as 5116254784 + 1321831449 = 71528^2 + 36357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6438086233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6438086233.

It is not an unprimeable number, because it can be changed into a prime (6438086203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2154598 + ... + 2157583.

It is an arithmetic number, because the mean of its divisors is an integer number (1610599977).

Almost surely, 2^6438086233 is an apocalyptic number.

It is an amenable number.

6438086233 is a deficient number, since it is larger than the sum of its proper divisors (4313675).

6438086233 is a wasteful number, since it uses less digits than its factorization.

6438086233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4313674.

The product of its (nonzero) digits is 497664, while the sum is 43.

The square root of 6438086233 is about 80237.6858651843. The cubic root of 6438086233 is about 1860.3111817008.

The spelling of 6438086233 in words is "six billion, four hundred thirty-eight million, eighty-six thousand, two hundred thirty-three".