6438502189 has 8 divisors (see below), whose sum is σ = 7595652608. Its totient is φ = 5340692880.

The previous prime is 6438502183. The next prime is 6438502207. The reversal of 6438502189 is 9812058346.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6438502189 - 2⁹ = 6438501677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438502183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14835042 + ... + 14835475.

It is an arithmetic number, because the mean of its divisors is an integer number (949456576).

Almost surely, 2^6438502189 is an apocalyptic number.

It is an amenable number.

6438502189 is a deficient number, since it is larger than the sum of its proper divisors (1157150419).

6438502189 is a wasteful number, since it uses less digits than its factorization.

6438502189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29670555.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 6438502189 is about 80240.2778472258. The cubic root of 6438502189 is about 1860.3512448969.

The spelling of 6438502189 in words is "six billion, four hundred thirty-eight million, five hundred two thousand, one hundred eighty-nine".