1171166961 has 8 divisors (see below), whose sum is σ = 1566483264. Its totient is φ = 778314320.

The previous prime is 1171166951. The next prime is 1171166981. The reversal of 1171166961 is 1696611711.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1171166961 - 2⁵ = 1171166929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1171166921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614805 + ... + 616706.

It is an arithmetic number, because the mean of its divisors is an integer number (195810408).

Almost surely, 2^1171166961 is an apocalyptic number.

It is an amenable number.

1171166961 is a deficient number, since it is larger than the sum of its proper divisors (395316303).

1171166961 is a wasteful number, since it uses less digits than its factorization.

1171166961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1231831.

The product of its digits is 13608, while the sum is 39.

The square root of 1171166961 is about 34222.3167100066. The cubic root of 1171166961 is about 1054.0784570378.

The spelling of 1171166961 in words is "one billion, one hundred seventy-one million, one hundred sixty-six thousand, nine hundred sixty-one".