1601417617 has 2 divisors, whose sum is σ = 1601417618. Its totient is φ = 1601417616.

The previous prime is 1601417599. The next prime is 1601417639. The reversal of 1601417617 is 7167141061.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1576407616 + 25010001 = 39704^2 + 5001^2 .

It is a cyclic number.

It is not a de Polignac number, because 1601417617 - 2²⁷ = 1467199889 is a prime.

It is not a weakly prime, because it can be changed into another prime (1601417677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800708808 + 800708809.

It is an arithmetic number, because the mean of its divisors is an integer number (800708809).

Almost surely, 2^1601417617 is an apocalyptic number.

It is an amenable number.

1601417617 is a deficient number, since it is larger than the sum of its proper divisors (1).

1601417617 is an equidigital number, since it uses as much as digits as its factorization.

1601417617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7056, while the sum is 34.

The square root of 1601417617 is about 40017.7162891637. The cubic root of 1601417617 is about 1169.9524214222.

Adding to 1601417617 its reverse (7167141061), we get a palindrome (8768558678).

The spelling of 1601417617 in words is "one billion, six hundred one million, four hundred seventeen thousand, six hundred seventeen".