1161956 has 6 divisors (see below), whose sum is σ = 2033430. Its totient is φ = 580976.

The previous prime is 1161949. The next prime is 1161991. The reversal of 1161956 is 6591611.

It can be written as a sum of positive squares in only one way, i.e., 1136356 + 25600 = 1066^2 + 160^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145241 + ... + 145248.

It is an arithmetic number, because the mean of its divisors is an integer number (338905).

2^1161956 is an apocalyptic number.

It is an amenable number.

1161956 is a deficient number, since it is larger than the sum of its proper divisors (871474).

1161956 is a wasteful number, since it uses less digits than its factorization.

1161956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290493 (or 290491 counting only the distinct ones).

The product of its digits is 1620, while the sum is 29.

The square root of 1161956 is about 1077.9406291628. The cubic root of 1161956 is about 105.1307818605.

The spelling of 1161956 in words is "one million, one hundred sixty-one thousand, nine hundred fifty-six".