1161214568 has 8 divisors (see below), whose sum is σ = 2177277330. Its totient is φ = 580607280.

The previous prime is 1161214559. The next prime is 1161214573. The reversal of 1161214568 is 8654121611.

It can be written as a sum of positive squares in only one way, i.e., 1121044324 + 40170244 = 33482^2 + 6338^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72575903 + ... + 72575918.

Almost surely, 2^1161214568 is an apocalyptic number.

It is an amenable number.

1161214568 is a deficient number, since it is larger than the sum of its proper divisors (1016062762).

1161214568 is a wasteful number, since it uses less digits than its factorization.

1161214568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145151827 (or 145151823 counting only the distinct ones).

The product of its digits is 11520, while the sum is 35.

The square root of 1161214568 is about 34076.5985391735. The cubic root of 1161214568 is about 1051.0841615106.

The spelling of 1161214568 in words is "one billion, one hundred sixty-one million, two hundred fourteen thousand, five hundred sixty-eight".