318161005409 has 16 divisors (see below), whose sum is σ = 356472668160. Its totient is φ = 281975359680.

The previous prime is 318161005397. The next prime is 318161005411. The reversal of 318161005409 is 904500161813.

It is a cyclic number.

It is not a de Polignac number, because 318161005409 - 2²⁰ = 318159956833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318161005429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3057014 + ... + 3159375.

It is an arithmetic number, because the mean of its divisors is an integer number (22279541760).

Almost surely, 2^318161005409 is an apocalyptic number.

It is an amenable number.

318161005409 is a deficient number, since it is larger than the sum of its proper divisors (38311662751).

318161005409 is a wasteful number, since it uses less digits than its factorization.

318161005409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6216560.

The product of its (nonzero) digits is 25920, while the sum is 38.

The spelling of 318161005409 in words is "three hundred eighteen billion, one hundred sixty-one million, five thousand, four hundred nine".