1161706885 has 16 divisors (see below), whose sum is σ = 1462302720. Its totient is φ = 884287360.

The previous prime is 1161706879. The next prime is 1161706907. The reversal of 1161706885 is 5886071611.

It is not a de Polignac number, because 1161706885 - 2¹⁹ = 1161182597 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4480 + ... + 48409.

It is an arithmetic number, because the mean of its divisors is an integer number (91393920).

Almost surely, 2^1161706885 is an apocalyptic number.

It is an amenable number.

1161706885 is a deficient number, since it is larger than the sum of its proper divisors (300595835).

1161706885 is a wasteful number, since it uses less digits than its factorization.

1161706885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53108.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 1161706885 is about 34083.8214553474. The cubic root of 1161706885 is about 1051.2326822930.

The spelling of 1161706885 in words is "one billion, one hundred sixty-one million, seven hundred six thousand, eight hundred eighty-five".