9009009161 has 8 divisors (see below), whose sum is σ = 9049660800. Its totient is φ = 8968382640.

The previous prime is 9009009143. The next prime is 9009009199. The reversal of 9009009161 is 1619009009.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9009009161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9009009101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1349171 + ... + 1355831.

It is an arithmetic number, because the mean of its divisors is an integer number (1131207600).

Almost surely, 2^9009009161 is an apocalyptic number.

It is an amenable number.

9009009161 is a deficient number, since it is larger than the sum of its proper divisors (40651639).

9009009161 is a wasteful number, since it uses less digits than its factorization.

9009009161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12559.

The product of its (nonzero) digits is 4374, while the sum is 35.

The square root of 9009009161 is about 94915.8003759121. The cubic root of 9009009161 is about 2080.7776586285. Note that the first 3 decimals are identical.

The spelling of 9009009161 in words is "nine billion, nine million, nine thousand, one hundred sixty-one".