6267888889 has 2 divisors, whose sum is σ = 6267888890. Its totient is φ = 6267888888.

The previous prime is 6267888857. The next prime is 6267888917. The reversal of 6267888889 is 9888887626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6159895225 + 107993664 = 78485^2 + 10392^2 .

It is a cyclic number.

It is not a de Polignac number, because 6267888889 - 2⁵ = 6267888857 is a prime.

It is a super-2 number, since 2×6267888889² = 78572862249699308642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6267888089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3133944444 + 3133944445.

It is an arithmetic number, because the mean of its divisors is an integer number (3133944445).

Almost surely, 2^6267888889 is an apocalyptic number.

It is an amenable number.

6267888889 is a deficient number, since it is larger than the sum of its proper divisors (1).

6267888889 is an equidigital number, since it uses as much as digits as its factorization.

6267888889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 148635648, while the sum is 70.

The square root of 6267888889 is about 79169.9999305292. Note that the first 4 decimals coincide. The cubic root of 6267888889 is about 1843.7714947543.

The spelling of 6267888889 in words is "six billion, two hundred sixty-seven million, eight hundred eighty-eight thousand, eight hundred eighty-nine".