1601115617 has 16 divisors (see below), whose sum is σ = 1716556800. Its totient is φ = 1488896640.

The previous prime is 1601115613. The next prime is 1601115623. The reversal of 1601115617 is 7165111061.

It is a cyclic number.

It is not a de Polignac number, because 1601115617 - 2² = 1601115613 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1601115617.

It is not an unprimeable number, because it can be changed into a prime (1601115611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 713984 + ... + 716222.

It is an arithmetic number, because the mean of its divisors is an integer number (107284800).

Almost surely, 2^1601115617 is an apocalyptic number.

It is an amenable number.

1601115617 is a deficient number, since it is larger than the sum of its proper divisors (115441183).

1601115617 is a wasteful number, since it uses less digits than its factorization.

1601115617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2936.

The product of its (nonzero) digits is 1260, while the sum is 29.

The square root of 1601115617 is about 40013.9427824852. The cubic root of 1601115617 is about 1169.8788724532.

Adding to 1601115617 its reverse (7165111061), we get a palindrome (8766226678).

The spelling of 1601115617 in words is "one billion, six hundred one million, one hundred fifteen thousand, six hundred seventeen".