3812501565 has 12 divisors (see below), whose sum is σ = 6608336124. Its totient is φ = 2033334144.

The previous prime is 3812501543. The next prime is 3812501569. The reversal of 3812501565 is 5651052183.

It is a happy number.

3812501565 is a `hidden beast` number, since 38 + 12 + 50 + 1 + 565 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 423166041 + 3389335524 = 20571^2 + 58218^2 .

It is not a de Polignac number, because 3812501565 - 2¹⁰ = 3812500541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3812501569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42361084 + ... + 42361173.

It is an arithmetic number, because the mean of its divisors is an integer number (550694677).

Almost surely, 2^3812501565 is an apocalyptic number.

It is an amenable number.

3812501565 is a deficient number, since it is larger than the sum of its proper divisors (2795834559).

3812501565 is a wasteful number, since it uses less digits than its factorization.

3812501565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84722268 (or 84722265 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 36.

The square root of 3812501565 is about 61745.4578491406. The cubic root of 3812501565 is about 1562.2001561383.

The spelling of 3812501565 in words is "three billion, eight hundred twelve million, five hundred one thousand, five hundred sixty-five".