6499051619 has 4 divisors (see below), whose sum is σ = 6499231440. Its totient is φ = 6498871800.

The previous prime is 6499051609. The next prime is 6499051633. The reversal of 6499051619 is 9161509946.

6499051619 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6499051619 is a prime.

It is a super-2 number, since 2×6499051619² = 84475343892853042322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6499051609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14759 + ... + 114960.

It is an arithmetic number, because the mean of its divisors is an integer number (1624807860).

Almost surely, 2^6499051619 is an apocalyptic number.

6499051619 is a deficient number, since it is larger than the sum of its proper divisors (179821).

6499051619 is a wasteful number, since it uses less digits than its factorization.

6499051619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179820.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 6499051619 is about 80616.6956591499. The cubic root of 6499051619 is about 1866.1648087974.

The spelling of 6499051619 in words is "six billion, four hundred ninety-nine million, fifty-one thousand, six hundred nineteen".