3784004065 has 4 divisors (see below), whose sum is σ = 4540804884. Its totient is φ = 3027203248.

The previous prime is 3784004051. The next prime is 3784004083. The reversal of 3784004065 is 5604004873.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 381381841 + 3402622224 = 19529^2 + 58332^2 .

It is a cyclic number.

It is not a de Polignac number, because 3784004065 - 2²¹ = 3781906913 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, 378400402 + ... + 378400411.

It is an arithmetic number, because the mean of its divisors is an integer number (1135201221).

Almost surely, 2^3784004065 is an apocalyptic number.

It is an amenable number.

3784004065 is a deficient number, since it is larger than the sum of its proper divisors (756800819).

3784004065 is an equidigital number, since it uses as much as digits as its factorization.

3784004065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756800818.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 3784004065 is about 61514.2590380474. The cubic root of 3784004065 is about 1558.2980651332.

The spelling of 3784004065 in words is "three billion, seven hundred eighty-four million, four thousand, sixty-five".