6503238853 has 4 divisors (see below), whose sum is σ = 6609849388. Its totient is φ = 6396628320.

The previous prime is 6503238839. The next prime is 6503238887. The reversal of 6503238853 is 3588323056.

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 148279329 + 6354959524 = 12177^2 + 79718^2 .

It is a cyclic number.

It is not a de Polignac number, because 6503238853 - 2¹⁷ = 6503107781 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 (6503248853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53305176 + ... + 53305297.

It is an arithmetic number, because the mean of its divisors is an integer number (1652462347).

Almost surely, 2^6503238853 is an apocalyptic number.

It is an amenable number.

6503238853 is a deficient number, since it is larger than the sum of its proper divisors (106610535).

6503238853 is a wasteful number, since it uses less digits than its factorization.

6503238853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106610534.

The product of its (nonzero) digits is 518400, while the sum is 43.

The square root of 6503238853 is about 80642.6614950176. The cubic root of 6503238853 is about 1866.5655027056.

The spelling of 6503238853 in words is "six billion, five hundred three million, two hundred thirty-eight thousand, eight hundred fifty-three".