161847089 has 8 divisors (see below), whose sum is σ = 174273120. Its totient is φ = 149743936.

The previous prime is 161847079. The next prime is 161847109. The reversal of 161847089 is 980748161.

161847089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 161847089 - 2⁸ = 161846833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161847019) 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, 79679 + ... + 81684.

It is an arithmetic number, because the mean of its divisors is an integer number (21784140).

Almost surely, 2^161847089 is an apocalyptic number.

It is an amenable number.

161847089 is a deficient number, since it is larger than the sum of its proper divisors (12426031).

161847089 is a wasteful number, since it uses less digits than its factorization.

161847089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161439.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 161847089 is about 12721.9137318251. The cubic root of 161847089 is about 544.9646067412.

The spelling of 161847089 in words is "one hundred sixty-one million, eight hundred forty-seven thousand, eighty-nine".