3684359809 has 4 divisors (see below), whose sum is σ = 3967772116. Its totient is φ = 3400947504.

The previous prime is 3684359747. The next prime is 3684359821. The reversal of 3684359809 is 9089534863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9089534863 = 32987 ⋅275549.

It can be written as a sum of positive squares in 2 ways, for example, as 1495523584 + 2188836225 = 38672^2 + 46785^2 .

It is a cyclic number.

It is not a de Polignac number, because 3684359809 - 2¹⁹ = 3683835521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3684359809.

It is not an unprimeable number, because it can be changed into a prime (3684359869) 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, 141706134 + ... + 141706159.

It is an arithmetic number, because the mean of its divisors is an integer number (991943029).

Almost surely, 2^3684359809 is an apocalyptic number.

It is an amenable number.

3684359809 is a deficient number, since it is larger than the sum of its proper divisors (283412307).

3684359809 is a wasteful number, since it uses less digits than its factorization.

3684359809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283412306.

The product of its (nonzero) digits is 5598720, while the sum is 55.

The square root of 3684359809 is about 60698.9275770174. The cubic root of 3684359809 is about 1544.4979826363.

The spelling of 3684359809 in words is "three billion, six hundred eighty-four million, three hundred fifty-nine thousand, eight hundred nine".