6264782981 has 2 divisors, whose sum is σ = 6264782982. Its totient is φ = 6264782980.

The previous prime is 6264782977. The next prime is 6264783043. The reversal of 6264782981 is 1892874626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6151892356 + 112890625 = 78434^2 + 10625^2 .

It is a cyclic number.

It is not a de Polignac number, because 6264782981 - 2² = 6264782977 is a prime.

It is a super-2 number, since 2×6264782981² = 78495011598054492722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6264781981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3132391490 + 3132391491.

It is an arithmetic number, because the mean of its divisors is an integer number (3132391491).

Almost surely, 2^6264782981 is an apocalyptic number.

It is an amenable number.

6264782981 is a deficient number, since it is larger than the sum of its proper divisors (1).

6264782981 is an equidigital number, since it uses as much as digits as its factorization.

6264782981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 53.

The square root of 6264782981 is about 79150.3820647759. The cubic root of 6264782981 is about 1843.4668982684.

The spelling of 6264782981 in words is "six billion, two hundred sixty-four million, seven hundred eighty-two thousand, nine hundred eighty-one".