3711221869 has 2 divisors, whose sum is σ = 3711221870. Its totient is φ = 3711221868.

The previous prime is 3711221867. The next prime is 3711221893. The reversal of 3711221869 is 9681221173.

3711221869 is digitally balanced in base 2, 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., 1869524644 + 1841697225 = 43238^2 + 42915^2 .

It is a cyclic number.

It is not a de Polignac number, because 3711221869 - 2¹ = 3711221867 is a prime.

It is a super-2 number, since 2×3711221869² = 27546335521887706322, which contains 22 as substring.

Together with 3711221867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3711221867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1855610934 + 1855610935.

It is an arithmetic number, because the mean of its divisors is an integer number (1855610935).

Almost surely, 2^3711221869 is an apocalyptic number.

It is an amenable number.

3711221869 is a deficient number, since it is larger than the sum of its proper divisors (1).

3711221869 is an equidigital number, since it uses as much as digits as its factorization.

3711221869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 40.

The square root of 3711221869 is about 60919.7986618472. The cubic root of 3711221869 is about 1548.2424572711.

The spelling of 3711221869 in words is "three billion, seven hundred eleven million, two hundred twenty-one thousand, eight hundred sixty-nine".