1156163 has 4 divisors (see below), whose sum is σ = 1166880. Its totient is φ = 1145448.

The previous prime is 1156157. The next prime is 1156171. The reversal of 1156163 is 3616511.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3616511 = 109 ⋅33179.

It is a cyclic number.

It is not a de Polignac number, because 1156163 - 2⁸ = 1155907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1156963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5195 + ... + 5412.

It is an arithmetic number, because the mean of its divisors is an integer number (291720).

2^1156163 is an apocalyptic number.

1156163 is a deficient number, since it is larger than the sum of its proper divisors (10717).

1156163 is a wasteful number, since it uses less digits than its factorization.

1156163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10716.

The product of its digits is 540, while the sum is 23.

The square root of 1156163 is about 1075.2502034410. The cubic root of 1156163 is about 104.9557788088.

The spelling of 1156163 in words is "one million, one hundred fifty-six thousand, one hundred sixty-three".