3765038561 has 2 divisors, whose sum is σ = 3765038562. Its totient is φ = 3765038560.

The previous prime is 3765038551. The next prime is 3765038581. The reversal of 3765038561 is 1658305673.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2114160400 + 1650878161 = 45980^2 + 40631^2 .

It is an emirp because it is prime and its reverse (1658305673) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3765038561 is a prime.

It is not a weakly prime, because it can be changed into another prime (3765038531) 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 as a sum of consecutive naturals, namely, 1882519280 + 1882519281.

It is an arithmetic number, because the mean of its divisors is an integer number (1882519281).

Almost surely, 2^3765038561 is an apocalyptic number.

It is an amenable number.

3765038561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3765038561 is an equidigital number, since it uses as much as digits as its factorization.

3765038561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 3765038561 is about 61359.9100471961. The cubic root of 3765038561 is about 1555.6902965237.

The spelling of 3765038561 in words is "three billion, seven hundred sixty-five million, thirty-eight thousand, five hundred sixty-one".