6490391829 has 4 divisors (see below), whose sum is σ = 8653855776. Its totient is φ = 4326927884.

The previous prime is 6490391783. The next prime is 6490391857. The reversal of 6490391829 is 9281930946.

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 6490391829 - 2⁸ = 6490391573 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 (6490391899) 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, 1081731969 + ... + 1081731974.

It is an arithmetic number, because the mean of its divisors is an integer number (2163463944).

Almost surely, 2^6490391829 is an apocalyptic number.

It is an amenable number.

6490391829 is a deficient number, since it is larger than the sum of its proper divisors (2163463947).

6490391829 is a wasteful number, since it uses less digits than its factorization.

6490391829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163463946.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 6490391829 is about 80562.9680994935. The cubic root of 6490391829 is about 1865.3355709614.

The spelling of 6490391829 in words is "six billion, four hundred ninety million, three hundred ninety-one thousand, eight hundred twenty-nine".