3711866161 has 4 divisors (see below), whose sum is σ = 3802399524. Its totient is φ = 3621332800.

The previous prime is 3711866143. The next prime is 3711866177. The reversal of 3711866161 is 1616681173.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1616681173 = 89 ⋅18164957.

It can be written as a sum of positive squares in 2 ways, for example, as 1002039025 + 2709827136 = 31655^2 + 52056^2 .

It is a cyclic number.

It is not a de Polignac number, because 3711866161 - 2²¹ = 3709769009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3711866101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45266620 + ... + 45266701.

It is an arithmetic number, because the mean of its divisors is an integer number (950599881).

Almost surely, 2^3711866161 is an apocalyptic number.

It is an amenable number.

3711866161 is a deficient number, since it is larger than the sum of its proper divisors (90533363).

3711866161 is an equidigital number, since it uses as much as digits as its factorization.

3711866161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90533362.

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

The square root of 3711866161 is about 60925.0864669062. The cubic root of 3711866161 is about 1548.3320470383.

The spelling of 3711866161 in words is "three billion, seven hundred eleven million, eight hundred sixty-six thousand, one hundred sixty-one".