6884138531 has 2 divisors, whose sum is σ = 6884138532. Its totient is φ = 6884138530.

The previous prime is 6884138507. The next prime is 6884138537. The reversal of 6884138531 is 1358314886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6884138531 - 2¹⁸ = 6883876387 is a prime.

It is a super-2 number, since 2×6884138531² = 94782726627997675922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6884138537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3442069265 + 3442069266.

It is an arithmetic number, because the mean of its divisors is an integer number (3442069266).

Almost surely, 2^6884138531 is an apocalyptic number.

6884138531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6884138531 is an equidigital number, since it uses as much as digits as its factorization.

6884138531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 552960, while the sum is 47.

The square root of 6884138531 is about 82970.7088736742. The cubic root of 6884138531 is about 1902.3183639993.

The spelling of 6884138531 in words is "six billion, eight hundred eighty-four million, one hundred thirty-eight thousand, five hundred thirty-one".