3824881381 has 2 divisors, whose sum is σ = 3824881382. Its totient is φ = 3824881380.

The previous prime is 3824881363. The next prime is 3824881451. The reversal of 3824881381 is 1831884283.

3824881381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3427517025 + 397364356 = 58545^2 + 19934^2 .

It is a cyclic number.

It is not a de Polignac number, because 3824881381 - 2⁹ = 3824880869 is a prime.

It is a super-2 number, since 2×3824881381² = 29259435157440934322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3824881331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1912440690 + 1912440691.

It is an arithmetic number, because the mean of its divisors is an integer number (1912440691).

Almost surely, 2^3824881381 is an apocalyptic number.

It is an amenable number.

3824881381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3824881381 is an equidigital number, since it uses as much as digits as its factorization.

3824881381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 294912, while the sum is 46.

The square root of 3824881381 is about 61845.6253990531. The cubic root of 3824881381 is about 1563.8892356687.

The spelling of 3824881381 in words is "three billion, eight hundred twenty-four million, eight hundred eighty-one thousand, three hundred eighty-one".