161098 has 16 divisors (see below), whose sum is σ = 284544. Its totient is φ = 66960.

The previous prime is 161093. The next prime is 161123. The reversal of 161098 is 890161.

161098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (161093) by changing a digit.

161098 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363 + ... + 673.

It is an arithmetic number, because the mean of its divisors is an integer number (17784).

2¹⁶¹⁰⁹⁸ is an apocalyptic number.

161098 is a deficient number, since it is larger than the sum of its proper divisors (123446).

161098 is a wasteful number, since it uses less digits than its factorization.

161098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 161098 is about 401.3701533497. The cubic root of 161098 is about 54.4122539437.

The spelling of 161098 in words is "one hundred sixty-one thousand, ninety-eight".