6345399481 has 8 divisors (see below), whose sum is σ = 6882528744. Its totient is φ = 5826478080.

The previous prime is 6345399479. The next prime is 6345399497. The reversal of 6345399481 is 1849935436.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1302127225 + 5043272256 = 36085^2 + 71016^2 .

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 6345399481 - 2¹ = 6345399479 is a prime.

It is a super-2 number, since 2×6345399481² = 80528189146950138722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6345399881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4551240 + ... + 4552633.

It is an arithmetic number, because the mean of its divisors is an integer number (860316093).

Almost surely, 2^6345399481 is an apocalyptic number.

It is an amenable number.

6345399481 is a deficient number, since it is larger than the sum of its proper divisors (537129263).

6345399481 is a wasteful number, since it uses less digits than its factorization.

6345399481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9103931.

The product of its digits is 2799360, while the sum is 52.

The square root of 6345399481 is about 79658.0157987883. The cubic root of 6345399481 is about 1851.3405896507.

The spelling of 6345399481 in words is "six billion, three hundred forty-five million, three hundred ninety-nine thousand, four hundred eighty-one".