3694099865 has 4 divisors (see below), whose sum is σ = 4432919844. Its totient is φ = 2955279888.

The previous prime is 3694099859. The next prime is 3694099879. The reversal of 3694099865 is 5689904963.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5689904963 = 877 ⋅6487919.

It can be written as a sum of positive squares in 2 ways, for example, as 460016704 + 3234083161 = 21448^2 + 56869^2 .

It is a cyclic number.

It is not a de Polignac number, because 3694099865 - 2²⁸ = 3425664409 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369409982 + ... + 369409991.

It is an arithmetic number, because the mean of its divisors is an integer number (1108229961).

Almost surely, 2^3694099865 is an apocalyptic number.

It is an amenable number.

3694099865 is a deficient number, since it is larger than the sum of its proper divisors (738819979).

3694099865 is an equidigital number, since it uses as much as digits as its factorization.

3694099865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738819978.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The square root of 3694099865 is about 60779.1071421751. The cubic root of 3694099865 is about 1545.8578081886.

The spelling of 3694099865 in words is "three billion, six hundred ninety-four million, ninety-nine thousand, eight hundred sixty-five".