6484618861 has 4 divisors (see below), whose sum is σ = 7410992992. Its totient is φ = 5558244732.

The previous prime is 6484618837. The next prime is 6484618867. The reversal of 6484618861 is 1688164846.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1688164846 = 2 ⋅844082423.

It is a cyclic number.

It is not a de Polignac number, because 6484618861 - 2⁷ = 6484618733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6484618799 and 6484618808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6484618867) 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, 463187055 + ... + 463187068.

It is an arithmetic number, because the mean of its divisors is an integer number (1852748248).

Almost surely, 2^6484618861 is an apocalyptic number.

It is an amenable number.

6484618861 is a deficient number, since it is larger than the sum of its proper divisors (926374131).

6484618861 is an equidigital number, since it uses as much as digits as its factorization.

6484618861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 926374130.

The product of its digits is 1769472, while the sum is 52.

The square root of 6484618861 is about 80527.1312105429. The cubic root of 6484618861 is about 1864.7823574749.

The spelling of 6484618861 in words is "six billion, four hundred eighty-four million, six hundred eighteen thousand, eight hundred sixty-one".