9217160881 has 4 divisors (see below), whose sum is σ = 9301722100. Its totient is φ = 9132599664.

The previous prime is 9217160863. The next prime is 9217160893. The reversal of 9217160881 is 1880617129.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4679791281 + 4537369600 = 68409^2 + 67360^2 .

It is a cyclic number.

It is not a de Polignac number, because 9217160881 - 2²⁷ = 9082943153 is a prime.

It is a super-2 number, since 2×9217160881² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9217160801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42280446 + ... + 42280663.

It is an arithmetic number, because the mean of its divisors is an integer number (2325430525).

Almost surely, 2^9217160881 is an apocalyptic number.

It is an amenable number.

9217160881 is a deficient number, since it is larger than the sum of its proper divisors (84561219).

9217160881 is a wasteful number, since it uses less digits than its factorization.

9217160881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84561218.

The product of its (nonzero) digits is 48384, while the sum is 43.

The square root of 9217160881 is about 96006.0460648182. The cubic root of 9217160881 is about 2096.6811431784.

The spelling of 9217160881 in words is "nine billion, two hundred seventeen million, one hundred sixty thousand, eight hundred eighty-one".