7981294463 has 2 divisors, whose sum is σ = 7981294464. Its totient is φ = 7981294462.

The previous prime is 7981294429. The next prime is 7981294481. The reversal of 7981294463 is 3644921897.

It is a strong prime.

It is an emirp because it is prime and its reverse (3644921897) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7981294463 - 2³² = 3686327167 is a prime.

It is a super-2 number, since 2×7981294463² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7981294403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990647231 + 3990647232.

It is an arithmetic number, because the mean of its divisors is an integer number (3990647232).

Almost surely, 2^7981294463 is an apocalyptic number.

7981294463 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981294463 is an equidigital number, since it uses as much as digits as its factorization.

7981294463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 53.

The square root of 7981294463 is about 89338.0907731971. The cubic root of 7981294463 is about 1998.4399887488.

The spelling of 7981294463 in words is "seven billion, nine hundred eighty-one million, two hundred ninety-four thousand, four hundred sixty-three".