3678359561 has 2 divisors, whose sum is σ = 3678359562. Its totient is φ = 3678359560.

The previous prime is 3678359537. The next prime is 3678359579. The reversal of 3678359561 is 1659538763.

3678359561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2348371600 + 1329987961 = 48460^2 + 36469^2 .

It is a cyclic number.

It is not a de Polignac number, because 3678359561 - 2⁶ = 3678359497 is a prime.

It is a super-2 number, since 2×3678359561² = 27060658120000225442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3678359521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1839179780 + 1839179781.

It is an arithmetic number, because the mean of its divisors is an integer number (1839179781).

Almost surely, 2^3678359561 is an apocalyptic number.

It is an amenable number.

3678359561 is a deficient number, since it is larger than the sum of its proper divisors (1).

3678359561 is an equidigital number, since it uses as much as digits as its factorization.

3678359561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 53.

The square root of 3678359561 is about 60649.4811272116. The cubic root of 3678359561 is about 1543.6590846249.

The spelling of 3678359561 in words is "three billion, six hundred seventy-eight million, three hundred fifty-nine thousand, five hundred sixty-one".