3785653561 has 2 divisors, whose sum is σ = 3785653562. Its totient is φ = 3785653560.

The previous prime is 3785653541. The next prime is 3785653577. The reversal of 3785653561 is 1653565873.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2898745600 + 886907961 = 53840^2 + 29781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3785653561 is a prime.

It is not a weakly prime, because it can be changed into another prime (3785653541) 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, 1892826780 + 1892826781.

It is an arithmetic number, because the mean of its divisors is an integer number (1892826781).

Almost surely, 2^3785653561 is an apocalyptic number.

It is an amenable number.

3785653561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3785653561 is an equidigital number, since it uses as much as digits as its factorization.

3785653561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268000, while the sum is 49.

The square root of 3785653561 is about 61527.6650052641. The cubic root of 3785653561 is about 1558.5244596244.

The spelling of 3785653561 in words is "three billion, seven hundred eighty-five million, six hundred fifty-three thousand, five hundred sixty-one".