1168722961 has 24 divisors (see below), whose sum is σ = 1383613440. Its totient is φ = 984184992.

The previous prime is 1168722949. The next prime is 1168722983. The reversal of 1168722961 is 1692278611.

It is not a de Polignac number, because 1168722961 - 2⁹ = 1168722449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1168722901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 677446 + ... + 679168.

It is an arithmetic number, because the mean of its divisors is an integer number (57650560).

Almost surely, 2^1168722961 is an apocalyptic number.

It is an amenable number.

1168722961 is a deficient number, since it is larger than the sum of its proper divisors (214890479).

1168722961 is a wasteful number, since it uses less digits than its factorization.

1168722961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973 (or 1966 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 1168722961 is about 34186.5903681546. The cubic root of 1168722961 is about 1053.3447268058.

The spelling of 1168722961 in words is "one billion, one hundred sixty-eight million, seven hundred twenty-two thousand, nine hundred sixty-one".