309009161 has 8 divisors (see below), whose sum is σ = 318074880. Its totient is φ = 300047328.

The previous prime is 309009149. The next prime is 309009193. The reversal of 309009161 is 161900903.

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 309009161 - 2⁶ = 309009097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (309009061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19916 + ... + 31853.

It is an arithmetic number, because the mean of its divisors is an integer number (39759360).

Almost surely, 2^309009161 is an apocalyptic number.

It is an amenable number.

309009161 is a deficient number, since it is larger than the sum of its proper divisors (9065719).

309009161 is a wasteful number, since it uses less digits than its factorization.

309009161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51943.

The product of its (nonzero) digits is 1458, while the sum is 29.

The square root of 309009161 is about 17578.6564048564. The cubic root of 309009161 is about 676.0681112294.

The spelling of 309009161 in words is "three hundred nine million, nine thousand, one hundred sixty-one".