1600147561 has 2 divisors, whose sum is σ = 1600147562. Its totient is φ = 1600147560.

The previous prime is 1600147543. The next prime is 1600147589. The reversal of 1600147561 is 1657410061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 860307561 + 739840000 = 29331^2 + 27200^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600147561 - 2¹¹ = 1600145513 is a prime.

It is not a weakly prime, because it can be changed into another prime (1600147531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800073780 + 800073781.

It is an arithmetic number, because the mean of its divisors is an integer number (800073781).

Almost surely, 2^1600147561 is an apocalyptic number.

It is an amenable number.

1600147561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600147561 is an equidigital number, since it uses as much as digits as its factorization.

1600147561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 1600147561 is about 40001.8444699741. The cubic root of 1600147561 is about 1169.6430500950.

The spelling of 1600147561 in words is "one billion, six hundred million, one hundred forty-seven thousand, five hundred sixty-one".