1601601559 has 2 divisors, whose sum is σ = 1601601560. Its totient is φ = 1601601558.

The previous prime is 1601601557. The next prime is 1601601593. The reversal of 1601601559 is 9551061061.

It is an a-pointer prime, because the next prime (1601601593) can be obtained adding 1601601559 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1601601559 - 2¹ = 1601601557 is a prime.

Together with 1601601557, 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 (1601601553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800800779 + 800800780.

It is an arithmetic number, because the mean of its divisors is an integer number (800800780).

Almost surely, 2^1601601559 is an apocalyptic number.

1601601559 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601601559 is an equidigital number, since it uses as much as digits as its factorization.

1601601559 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 1601601559 is about 40020.0144802573. The cubic root of 1601601559 is about 1169.9972140582.

The spelling of 1601601559 in words is "one billion, six hundred one million, six hundred one thousand, five hundred fifty-nine".