1161941156 has 12 divisors (see below), whose sum is σ = 2037990192. Its totient is φ = 579658248.

The previous prime is 1161941147. The next prime is 1161941167. The reversal of 1161941156 is 6511491611.

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 in 3 ways as a sum of consecutive naturals, for example, 326090 + ... + 329633.

It is an arithmetic number, because the mean of its divisors is an integer number (169832516).

Almost surely, 2^1161941156 is an apocalyptic number.

It is an amenable number.

1161941156 is a deficient number, since it is larger than the sum of its proper divisors (876049036).

1161941156 is a wasteful number, since it uses less digits than its factorization.

1161941156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656170 (or 656168 counting only the distinct ones).

The product of its digits is 6480, while the sum is 35.

The square root of 1161941156 is about 34087.2579712713. The cubic root of 1161941156 is about 1051.3033417632.

The spelling of 1161941156 in words is "one billion, one hundred sixty-one million, nine hundred forty-one thousand, one hundred fifty-six".