6490985549 has 16 divisors (see below), whose sum is σ = 6839311872. Its totient is φ = 6148441728.

The previous prime is 6490985519. The next prime is 6490985563. The reversal of 6490985549 is 9455890946.

6490985549 = 4397² + 4398² + ... + 4709².

It is a cyclic number.

It is not a de Polignac number, because 6490985549 - 2¹⁶ = 6490920013 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6490985519) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1127372 + ... + 1133114.

It is an arithmetic number, because the mean of its divisors is an integer number (427456992).

Almost surely, 2^6490985549 is an apocalyptic number.

It is an amenable number.

6490985549 is a deficient number, since it is larger than the sum of its proper divisors (348326323).

6490985549 is a wasteful number, since it uses less digits than its factorization.

6490985549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6236.

The product of its (nonzero) digits is 13996800, while the sum is 59.

The square root of 6490985549 is about 80566.6528347802. The cubic root of 6490985549 is about 1865.3924475104.

The spelling of 6490985549 in words is "six billion, four hundred ninety million, nine hundred eighty-five thousand, five hundred forty-nine".