6938057881 has 2 divisors, whose sum is σ = 6938057882. Its totient is φ = 6938057880.

The previous prime is 6938057857. The next prime is 6938057911. The reversal of 6938057881 is 1887508396.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6764240025 + 173817856 = 82245^2 + 13184^2 .

It is a cyclic number.

It is not a de Polignac number, because 6938057881 - 2¹¹ = 6938055833 is a prime.

It is a super-2 number, since 2×6938057881² = 96273294320212420322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6938057821) 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, 3469028940 + 3469028941.

It is an arithmetic number, because the mean of its divisors is an integer number (3469028941).

Almost surely, 2^6938057881 is an apocalyptic number.

It is an amenable number.

6938057881 is a deficient number, since it is larger than the sum of its proper divisors (1).

6938057881 is an equidigital number, since it uses as much as digits as its factorization.

6938057881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 6938057881 is about 83295.0051383635. The cubic root of 6938057881 is about 1907.2720283269.

The spelling of 6938057881 in words is "six billion, nine hundred thirty-eight million, fifty-seven thousand, eight hundred eighty-one".