3775488281 has 2 divisors, whose sum is σ = 3775488282. Its totient is φ = 3775488280.

The previous prime is 3775488253. The next prime is 3775488287. The reversal of 3775488281 is 1828845773.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3775488025 + 256 = 61445^2 + 16^2 .

It is an emirp because it is prime and its reverse (1828845773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3775488281 - 2¹⁰ = 3775487257 is a prime.

It is a super-2 number, since 2×3775488281² = 28508623519936669922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3775488287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1887744140 + 1887744141.

It is an arithmetic number, because the mean of its divisors is an integer number (1887744141).

Almost surely, 2^3775488281 is an apocalyptic number.

It is an amenable number.

3775488281 is a deficient number, since it is larger than the sum of its proper divisors (1).

3775488281 is an equidigital number, since it uses as much as digits as its factorization.

3775488281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3010560, while the sum is 53.

The square root of 3775488281 is about 61445.0020831638. The cubic root of 3775488281 is about 1557.1282199429.

The spelling of 3775488281 in words is "three billion, seven hundred seventy-five million, four hundred eighty-eight thousand, two hundred eighty-one".