6485494641 has 4 divisors (see below), whose sum is σ = 8647326192. Its totient is φ = 4323663092.

The previous prime is 6485494633. The next prime is 6485494657. The reversal of 6485494641 is 1464945846.

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.

It is a cyclic number.

It is not a de Polignac number, because 6485494641 - 2³ = 6485494633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6485494661) 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, 1080915771 + ... + 1080915776.

It is an arithmetic number, because the mean of its divisors is an integer number (2161831548).

Almost surely, 2^6485494641 is an apocalyptic number.

It is an amenable number.

6485494641 is a deficient number, since it is larger than the sum of its proper divisors (2161831551).

6485494641 is a wasteful number, since it uses less digits than its factorization.

6485494641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2161831550.

The product of its digits is 3317760, while the sum is 51.

The square root of 6485494641 is about 80532.5688215644. The cubic root of 6485494641 is about 1864.8663030705.

The spelling of 6485494641 in words is "six billion, four hundred eighty-five million, four hundred ninety-four thousand, six hundred forty-one".