1161866847 has 8 divisors (see below), whose sum is σ = 1549332144. Its totient is φ = 774489728.

The previous prime is 1161866833. The next prime is 1161866851. The reversal of 1161866847 is 7486681611.

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 1161866847 - 2¹¹ = 1161864799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1161866796 and 1161866805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161866807) 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, 20353 + ... + 52325.

It is an arithmetic number, because the mean of its divisors is an integer number (193666518).

Almost surely, 2^1161866847 is an apocalyptic number.

1161866847 is a deficient number, since it is larger than the sum of its proper divisors (387465297).

1161866847 is a wasteful number, since it uses less digits than its factorization.

1161866847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44089.

The product of its digits is 387072, while the sum is 48.

The square root of 1161866847 is about 34086.1679717741. The cubic root of 1161866847 is about 1051.2809301390.

The spelling of 1161866847 in words is "one billion, one hundred sixty-one million, eight hundred sixty-six thousand, eight hundred forty-seven".