6461461393 has 4 divisors (see below), whose sum is σ = 6469821108. Its totient is φ = 6453101680.

The previous prime is 6461461387. The next prime is 6461461397. The reversal of 6461461393 is 3931641646.

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 1099121409 + 5362339984 = 33153^2 + 73228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6461461393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6461461397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4178698 + ... + 4180243.

It is an arithmetic number, because the mean of its divisors is an integer number (1617455277).

Almost surely, 2^6461461393 is an apocalyptic number.

It is an amenable number.

6461461393 is a deficient number, since it is larger than the sum of its proper divisors (8359715).

6461461393 is an equidigital number, since it uses as much as digits as its factorization.

6461461393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8359714.

The product of its digits is 279936, while the sum is 43.

The square root of 6461461393 is about 80383.2158662491. The cubic root of 6461461393 is about 1862.5599115181.

It can be divided in two parts, 646 and 1461393, that multiplied together give a triangular number (944059878 = T₄₃₄₅₂).

The spelling of 6461461393 in words is "six billion, four hundred sixty-one million, four hundred sixty-one thousand, three hundred ninety-three".