6481389253 has 8 divisors (see below), whose sum is σ = 6622086528. Its totient is φ = 6340808544.

The previous prime is 6481389223. The next prime is 6481389301. The reversal of 6481389253 is 3529831846.

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 6481389253 - 2⁵ = 6481389221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6481389197 and 6481389206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6481389223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88350 + ... + 144112.

It is an arithmetic number, because the mean of its divisors is an integer number (827760816).

Almost surely, 2^6481389253 is an apocalyptic number.

It is an amenable number.

6481389253 is a deficient number, since it is larger than the sum of its proper divisors (140697275).

6481389253 is a wasteful number, since it uses less digits than its factorization.

6481389253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58283.

The product of its digits is 1244160, while the sum is 49.

The square root of 6481389253 is about 80507.0757946157. The cubic root of 6481389253 is about 1864.4727265238.

The spelling of 6481389253 in words is "six billion, four hundred eighty-one million, three hundred eighty-nine thousand, two hundred fifty-three".