3683811665 has 16 divisors (see below), whose sum is σ = 4537814400. Its totient is φ = 2869188480.

The previous prime is 3683811661. The next prime is 3683811689. The reversal of 3683811665 is 5661183863.

It is not a de Polignac number, because 3683811665 - 2² = 3683811661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3683811661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81386 + ... + 118284.

It is an arithmetic number, because the mean of its divisors is an integer number (283613400).

Almost surely, 2^3683811665 is an apocalyptic number.

It is an amenable number.

3683811665 is a deficient number, since it is larger than the sum of its proper divisors (854002735).

3683811665 is a wasteful number, since it uses less digits than its factorization.

3683811665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37432.

The product of its digits is 622080, while the sum is 47.

The square root of 3683811665 is about 60694.4121398338. The cubic root of 3683811665 is about 1544.4213841375.

The spelling of 3683811665 in words is "three billion, six hundred eighty-three million, eight hundred eleven thousand, six hundred sixty-five".