6450491485 has 4 divisors (see below), whose sum is σ = 7740589788. Its totient is φ = 5160393184.

The previous prime is 6450491479. The next prime is 6450491513. The reversal of 6450491485 is 5841940546.

It is a happy number.

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 3403672281 + 3046819204 = 58341^2 + 55198^2 .

It is a cyclic number.

It is not a de Polignac number, because 6450491485 - 2¹³ = 6450483293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 645049144 + ... + 645049153.

It is an arithmetic number, because the mean of its divisors is an integer number (1935147447).

Almost surely, 2^6450491485 is an apocalyptic number.

It is an amenable number.

6450491485 is a deficient number, since it is larger than the sum of its proper divisors (1290098303).

6450491485 is a wasteful number, since it uses less digits than its factorization.

6450491485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290098302.

The product of its (nonzero) digits is 691200, while the sum is 46.

The square root of 6450491485 is about 80314.9518147150. The cubic root of 6450491485 is about 1861.5052644148.

The spelling of 6450491485 in words is "six billion, four hundred fifty million, four hundred ninety-one thousand, four hundred eighty-five".