6399182491 has 8 divisors (see below), whose sum is σ = 7004402384. Its totient is φ = 5810101920.

The previous prime is 6399182479. The next prime is 6399182497. The reversal of 6399182491 is 1942819936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6399182491 - 2⁵ = 6399182459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6399182497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4034001 + ... + 4035586.

It is an arithmetic number, because the mean of its divisors is an integer number (875550298).

Almost surely, 2^6399182491 is an apocalyptic number.

6399182491 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

6399182491 is a deficient number, since it is larger than the sum of its proper divisors (605219893).

6399182491 is a wasteful number, since it uses less digits than its factorization.

6399182491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8069661.

The product of its digits is 839808, while the sum is 52.

The square root of 6399182491 is about 79994.8904055753. The cubic root of 6399182491 is about 1856.5564771488.

The spelling of 6399182491 in words is "six billion, three hundred ninety-nine million, one hundred eighty-two thousand, four hundred ninety-one".