3881372489 has 2 divisors, whose sum is σ = 3881372490. Its totient is φ = 3881372488.

The previous prime is 3881372447. The next prime is 3881372513. The reversal of 3881372489 is 9842731883.

3881372489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3195980089 + 685392400 = 56533^2 + 26180^2 .

It is an emirp because it is prime and its reverse (9842731883) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3881372489 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3881372489.

It is not a weakly prime, because it can be changed into another prime (3881371489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1940686244 + 1940686245.

It is an arithmetic number, because the mean of its divisors is an integer number (1940686245).

Almost surely, 2^3881372489 is an apocalyptic number.

It is an amenable number.

3881372489 is a deficient number, since it is larger than the sum of its proper divisors (1).

3881372489 is an equidigital number, since it uses as much as digits as its factorization.

3881372489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 53.

The square root of 3881372489 is about 62300.6620269801. The cubic root of 3881372489 is about 1571.5508616861.

The spelling of 3881372489 in words is "three billion, eight hundred eighty-one million, three hundred seventy-two thousand, four hundred eighty-nine".