1561067359 has 2 divisors, whose sum is σ = 1561067360. Its totient is φ = 1561067358.

The previous prime is 1561067357. The next prime is 1561067377. The reversal of 1561067359 is 9537601651.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1561067359 - 2¹ = 1561067357 is a prime.

Together with 1561067357, 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 (1561067351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 780533679 + 780533680.

It is an arithmetic number, because the mean of its divisors is an integer number (780533680).

Almost surely, 2^1561067359 is an apocalyptic number.

1561067359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1561067359 is an equidigital number, since it uses as much as digits as its factorization.

1561067359 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 1561067359 is about 39510.3449617945. The cubic root of 1561067359 is about 1160.0424476639.

The spelling of 1561067359 in words is "one billion, five hundred sixty-one million, sixty-seven thousand, three hundred fifty-nine".