161518085 has 8 divisors (see below), whose sum is σ = 197945856. Its totient is φ = 126465040.

The previous prime is 161518079. The next prime is 161518099. The reversal of 161518085 is 580815161.

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

It is not a de Polignac number, because 161518085 - 2¹⁰ = 161517061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343421 + ... + 343890.

It is an arithmetic number, because the mean of its divisors is an integer number (24743232).

Almost surely, 2^161518085 is an apocalyptic number.

It is an amenable number.

161518085 is a deficient number, since it is larger than the sum of its proper divisors (36427771).

161518085 is an equidigital number, since it uses as much as digits as its factorization.

161518085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687363.

The product of its (nonzero) digits is 9600, while the sum is 35.

The square root of 161518085 is about 12708.9765520281. The cubic root of 161518085 is about 544.5950868339.

The spelling of 161518085 in words is "one hundred sixty-one million, five hundred eighteen thousand, eighty-five".