6038775781 has 2 divisors, whose sum is σ = 6038775782. Its totient is φ = 6038775780.

The previous prime is 6038775737. The next prime is 6038775803. The reversal of 6038775781 is 1875778306.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4484445156 + 1554330625 = 66966^2 + 39425^2 .

It is a cyclic number.

It is not a de Polignac number, because 6038775781 - 2¹⁵ = 6038743013 is a prime.

It is a super-2 number, since 2×6038775781² = 72933625866384319922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6038775731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3019387890 + 3019387891.

It is an arithmetic number, because the mean of its divisors is an integer number (3019387891).

Almost surely, 2^6038775781 is an apocalyptic number.

It is an amenable number.

6038775781 is a deficient number, since it is larger than the sum of its proper divisors (1).

6038775781 is an equidigital number, since it uses as much as digits as its factorization.

6038775781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1975680, while the sum is 52.

The square root of 6038775781 is about 77709.5604221257. The cubic root of 6038775781 is about 1821.0266498635.

The spelling of 6038775781 in words is "six billion, thirty-eight million, seven hundred seventy-five thousand, seven hundred eighty-one".