3881385553 has 2 divisors, whose sum is σ = 3881385554. Its totient is φ = 3881385552.

The previous prime is 3881385551. The next prime is 3881385671. The reversal of 3881385553 is 3555831883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3450740049 + 430645504 = 58743^2 + 20752^2 .

It is a cyclic number.

It is not a de Polignac number, because 3881385553 - 2¹ = 3881385551 is a prime.

It is a super-2 number, since 2×3881385553² = 30130307622074231618, which contains 22 as substring.

Together with 3881385551, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 3881385497 and 3881385506.

It is not a weakly prime, because it can be changed into another prime (3881385551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940692776 + 1940692777.

It is an arithmetic number, because the mean of its divisors is an integer number (1940692777).

Almost surely, 2^3881385553 is an apocalyptic number.

It is an amenable number.

3881385553 is a deficient number, since it is larger than the sum of its proper divisors (1).

3881385553 is an equidigital number, since it uses as much as digits as its factorization.

3881385553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1728000, while the sum is 49.

The square root of 3881385553 is about 62300.7668732898. The cubic root of 3881385553 is about 1571.5526248697.

The spelling of 3881385553 in words is "three billion, eight hundred eighty-one million, three hundred eighty-five thousand, five hundred fifty-three".