3775488781 has 2 divisors, whose sum is σ = 3775488782. Its totient is φ = 3775488780.

The previous prime is 3775488779. The next prime is 3775488839. The reversal of 3775488781 is 1878845773.

It is an a-pointer prime, because the next prime (3775488839) can be obtained adding 3775488781 to its sum of digits (58).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2920862025 + 854626756 = 54045^2 + 29234^2 .

It is a cyclic number.

It is not a de Polignac number, because 3775488781 - 2¹ = 3775488779 is a prime.

It is a super-2 number, since 2×3775488781² = 28508631070913731922, which contains 22 as substring.

Together with 3775488779, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3775488701) 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, 1887744390 + 1887744391.

It is an arithmetic number, because the mean of its divisors is an integer number (1887744391).

Almost surely, 2^3775488781 is an apocalyptic number.

It is an amenable number.

3775488781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3775488781 is an equidigital number, since it uses as much as digits as its factorization.

3775488781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10536960, while the sum is 58.

The square root of 3775488781 is about 61445.0061518428. The cubic root of 3775488781 is about 1557.1282886814.

The spelling of 3775488781 in words is "three billion, seven hundred seventy-five million, four hundred eighty-eight thousand, seven hundred eighty-one".