6489389737 has 4 divisors (see below), whose sum is σ = 6509861316. Its totient is φ = 6468918160.

The previous prime is 6489389693. The next prime is 6489389749. The reversal of 6489389737 is 7379839846.

6489389737 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 195188841 + 6294200896 = 13971^2 + 79336^2 .

It is a cyclic number.

It is not a de Polignac number, because 6489389737 - 2⁷ = 6489389609 is a prime.

It is a super-2 number, since 2×6489389737² = 84224358317361858338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6489389437) 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, 10235314 + ... + 10235947.

It is an arithmetic number, because the mean of its divisors is an integer number (1627465329).

Almost surely, 2^6489389737 is an apocalyptic number.

It is an amenable number.

6489389737 is a deficient number, since it is larger than the sum of its proper divisors (20471579).

6489389737 is a wasteful number, since it uses less digits than its factorization.

6489389737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20471578.

The product of its digits is 54867456, while the sum is 64.

The square root of 6489389737 is about 80556.7485503232. The cubic root of 6489389737 is about 1865.2395657631.

The spelling of 6489389737 in words is "six billion, four hundred eighty-nine million, three hundred eighty-nine thousand, seven hundred thirty-seven".