1161065653 has 8 divisors (see below), whose sum is σ = 1279676160. Its totient is φ = 1044631680.

The previous prime is 1161065651. The next prime is 1161065671. The reversal of 1161065653 is 3565601611.

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 1161065653 - 2¹ = 1161065651 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161065651) 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, 543013 + ... + 545146.

It is an arithmetic number, because the mean of its divisors is an integer number (159959520).

Almost surely, 2^1161065653 is an apocalyptic number.

It is an amenable number.

1161065653 is a deficient number, since it is larger than the sum of its proper divisors (118610507).

1161065653 is a wasteful number, since it uses less digits than its factorization.

1161065653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088267.

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 1161065653 is about 34074.4134652381. The cubic root of 1161065653 is about 1051.0392289909.

The spelling of 1161065653 in words is "one billion, one hundred sixty-one million, sixty-five thousand, six hundred fifty-three".