1117589881 has 8 divisors (see below), whose sum is σ = 1122079464. Its totient is φ = 1113108480.

The previous prime is 1117589831. The next prime is 1117589903. The reversal of 1117589881 is 1889857111.

It can be written as a sum of positive squares in 4 ways, for example, as 234549225 + 883040656 = 15315^2 + 29716^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1117589881 - 2¹¹ = 1117587833 is a prime.

It is a super-2 number, since 2×1117589881² = 2498014284227188322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1117589801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456621 + ... + 459061.

It is an arithmetic number, because the mean of its divisors is an integer number (140259933).

Almost surely, 2^1117589881 is an apocalyptic number.

It is an amenable number.

1117589881 is a deficient number, since it is larger than the sum of its proper divisors (4489583).

1117589881 is a wasteful number, since it uses less digits than its factorization.

With its predecessor (1117589880) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (4091).

1117589881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091.

The product of its digits is 161280, while the sum is 49.

The square root of 1117589881 is about 33430.3736293808. The cubic root of 1117589881 is about 1037.7533729847.

The spelling of 1117589881 in words is "one billion, one hundred seventeen million, five hundred eighty-nine thousand, eight hundred eighty-one".