3773028661 has 2 divisors, whose sum is σ = 3773028662. Its totient is φ = 3773028660.

The previous prime is 3773028659. The next prime is 3773028751. The reversal of 3773028661 is 1668203773.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2427532900 + 1345495761 = 49270^2 + 36681^2 .

It is an emirp because it is prime and its reverse (1668203773) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3773028661 - 2¹ = 3773028659 is a prime.

Together with 3773028659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3773028641) 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, 1886514330 + 1886514331.

It is an arithmetic number, because the mean of its divisors is an integer number (1886514331).

Almost surely, 2^3773028661 is an apocalyptic number.

It is an amenable number.

3773028661 is a deficient number, since it is larger than the sum of its proper divisors (1).

3773028661 is an equidigital number, since it uses as much as digits as its factorization.

3773028661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 43.

The square root of 3773028661 is about 61424.9840130219. The cubic root of 3773028661 is about 1556.7900053486.

The spelling of 3773028661 in words is "three billion, seven hundred seventy-three million, twenty-eight thousand, six hundred sixty-one".