6489104381 has 2 divisors, whose sum is σ = 6489104382. Its totient is φ = 6489104380.

The previous prime is 6489104359. The next prime is 6489104387. The reversal of 6489104381 is 1834019846.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5011932025 + 1477172356 = 70795^2 + 38434^2 .

It is a cyclic number.

It is not a de Polignac number, because 6489104381 - 2¹⁸ = 6488842237 is a prime.

It is a super-2 number, since 2×6489104381² = 84216951335026786322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6489104387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3244552190 + 3244552191.

It is an arithmetic number, because the mean of its divisors is an integer number (3244552191).

Almost surely, 2^6489104381 is an apocalyptic number.

It is an amenable number.

6489104381 is a deficient number, since it is larger than the sum of its proper divisors (1).

6489104381 is an equidigital number, since it uses as much as digits as its factorization.

6489104381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 6489104381 is about 80554.9773819098. The cubic root of 6489104381 is about 1865.2122254880.

The spelling of 6489104381 in words is "six billion, four hundred eighty-nine million, one hundred four thousand, three hundred eighty-one".