6309630991 has 2 divisors, whose sum is σ = 6309630992. Its totient is φ = 6309630990.

The previous prime is 6309630989. The next prime is 6309630997. The reversal of 6309630991 is 1990369036.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6309630991 - 2¹ = 6309630989 is a prime.

It is a super-2 number, since 2×6309630991² = 79622886485175284162, which contains 22 as substring.

Together with 6309630989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6309630997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3154815495 + 3154815496.

It is an arithmetic number, because the mean of its divisors is an integer number (3154815496).

Almost surely, 2^6309630991 is an apocalyptic number.

6309630991 is a deficient number, since it is larger than the sum of its proper divisors (1).

6309630991 is an equidigital number, since it uses as much as digits as its factorization.

6309630991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 46.

The square root of 6309630991 is about 79433.1857034577. The cubic root of 6309630991 is about 1847.8554151506.

The spelling of 6309630991 in words is "six billion, three hundred nine million, six hundred thirty thousand, nine hundred ninety-one".