3631889 has 2 divisors, whose sum is σ = 3631890. Its totient is φ = 3631888.

The previous prime is 3631877. The next prime is 3631919. The reversal of 3631889 is 9881363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3478225 + 153664 = 1865^2 + 392^2 .

It is an emirp because it is prime and its reverse (9881363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3631889 - 2⁸ = 3631633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3601889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815944 + 1815945.

It is an arithmetic number, because the mean of its divisors is an integer number (1815945).

Almost surely, 2^3631889 is an apocalyptic number.

It is an amenable number.

3631889 is a deficient number, since it is larger than the sum of its proper divisors (1).

3631889 is an equidigital number, since it uses as much as digits as its factorization.

3631889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 38.

The square root of 3631889 is about 1905.7515577850. The cubic root of 3631889 is about 153.7130909266.

The spelling of 3631889 in words is "three million, six hundred thirty-one thousand, eight hundred eighty-nine".