3561396169 has 2 divisors, whose sum is σ = 3561396170. Its totient is φ = 3561396168.

The previous prime is 3561396149. The next prime is 3561396191. The reversal of 3561396169 is 9616931653.

3561396169 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3479584144 + 81812025 = 58988^2 + 9045^2 .

It is a cyclic number.

It is not a de Polignac number, because 3561396169 - 2⁹ = 3561395657 is a prime.

It is a super-2 number, since 2×3561396169² = 25367085345135753122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3561396149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1780698084 + 1780698085.

It is an arithmetic number, because the mean of its divisors is an integer number (1780698085).

Almost surely, 2^3561396169 is an apocalyptic number.

It is an amenable number.

3561396169 is a deficient number, since it is larger than the sum of its proper divisors (1).

3561396169 is an equidigital number, since it uses as much as digits as its factorization.

3561396169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 49.

The square root of 3561396169 is about 59677.4343366067. The cubic root of 3561396169 is about 1527.1209287195.

The spelling of 3561396169 in words is "three billion, five hundred sixty-one million, three hundred ninety-six thousand, one hundred sixty-nine".