1165963 has 4 divisors (see below), whose sum is σ = 1168128. Its totient is φ = 1163800.

The previous prime is 1165951. The next prime is 1165991. The reversal of 1165963 is 3695611.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1165963 - 2¹³ = 1157771 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 (1165903) 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, 438 + ... + 1588.

It is an arithmetic number, because the mean of its divisors is an integer number (292032).

2^1165963 is an apocalyptic number.

1165963 is a deficient number, since it is larger than the sum of its proper divisors (2165).

1165963 is a wasteful number, since it uses less digits than its factorization.

1165963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2164.

The product of its digits is 4860, while the sum is 31.

The square root of 1165963 is about 1079.7976662320. The cubic root of 1165963 is about 105.2514908867.

The spelling of 1165963 in words is "one million, one hundred sixty-five thousand, nine hundred sixty-three".