161004089 has 8 divisors (see below), whose sum is σ = 168045192. Its totient is φ = 154111360.

The previous prime is 161004047. The next prime is 161004091. The reversal of 161004089 is 980400161.

161004089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 94864 + 160909225 = 308^2 + 12685^2 .

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 161004089 - 2⁸ = 161003833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161004029) 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, 34874 + ... + 39219.

It is an arithmetic number, because the mean of its divisors is an integer number (21005649).

Almost surely, 2^161004089 is an apocalyptic number.

It is an amenable number.

161004089 is a deficient number, since it is larger than the sum of its proper divisors (7041103).

161004089 is an equidigital number, since it uses as much as digits as its factorization.

161004089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74187.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 161004089 is about 12688.7386685990. The cubic root of 161004089 is about 544.0167880218.

The spelling of 161004089 in words is "one hundred sixty-one million, four thousand, eighty-nine".