1161081717 has 16 divisors (see below), whose sum is σ = 1584014400. Its totient is φ = 756300672.

The previous prime is 1161081703. The next prime is 1161081721. The reversal of 1161081717 is 7171801611.

It is a happy number.

It is not a de Polignac number, because 1161081717 - 2²⁰ = 1160033141 is a prime.

It is a super-2 number, since 2×1161081717² = 2696221507103336178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161081217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1342 + ... + 48207.

It is an arithmetic number, because the mean of its divisors is an integer number (99000900).

Almost surely, 2^1161081717 is an apocalyptic number.

It is an amenable number.

1161081717 is a deficient number, since it is larger than the sum of its proper divisors (422932683).

1161081717 is a wasteful number, since it uses less digits than its factorization.

1161081717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49732.

The product of its (nonzero) digits is 2352, while the sum is 33.

The square root of 1161081717 is about 34074.6491838141. The cubic root of 1161081717 is about 1051.0440762093.

The spelling of 1161081717 in words is "one billion, one hundred sixty-one million, eighty-one thousand, seven hundred seventeen".