3765161 has 2 divisors, whose sum is σ = 3765162. Its totient is φ = 3765160.

The previous prime is 3765149. The next prime is 3765197. The reversal of 3765161 is 1615673.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3705625 + 59536 = 1925^2 + 244^2 .

It is an emirp because it is prime and its reverse (1615673) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3765161 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (3765101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1882580 + 1882581.

It is an arithmetic number, because the mean of its divisors is an integer number (1882581).

Almost surely, 2^3765161 is an apocalyptic number.

It is an amenable number.

3765161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3765161 is an equidigital number, since it uses as much as digits as its factorization.

3765161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3780, while the sum is 29.

The square root of 3765161 is about 1940.4022778795. The cubic root of 3765161 is about 155.5707160016.

The spelling of 3765161 in words is "three million, seven hundred sixty-five thousand, one hundred sixty-one".