1163961 has 12 divisors (see below), whose sum is σ = 1754688. Its totient is φ = 742104.

The previous prime is 1163947. The next prime is 1163969. The reversal of 1163961 is 1693611.

It is not a de Polignac number, because 1163961 - 2¹⁰ = 1162937 is a prime.

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1163969) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2605 + ... + 3018.

It is an arithmetic number, because the mean of its divisors is an integer number (146224).

2^1163961 is an apocalyptic number.

It is an amenable number.

1163961 is a deficient number, since it is larger than the sum of its proper divisors (590727).

1163961 is a wasteful number, since it uses less digits than its factorization.

1163961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5652 (or 5649 counting only the distinct ones).

The product of its digits is 972, while the sum is 27.

The square root of 1163961 is about 1078.8702424296. The cubic root of 1163961 is about 105.1912161894.

The spelling of 1163961 in words is "one million, one hundred sixty-three thousand, nine hundred sixty-one".