161298598 has 4 divisors (see below), whose sum is σ = 241947900. Its totient is φ = 80649298.

The previous prime is 161298593. The next prime is 161298637. The reversal of 161298598 is 895892161.

161298598 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161298593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40324648 + ... + 40324651.

It is an arithmetic number, because the mean of its divisors is an integer number (60486975).

Almost surely, 2^161298598 is an apocalyptic number.

161298598 is a deficient number, since it is larger than the sum of its proper divisors (80649302).

161298598 is an equidigital number, since it uses as much as digits as its factorization.

161298598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80649301.

The product of its digits is 311040, while the sum is 49.

The square root of 161298598 is about 12700.3384994259. The cubic root of 161298598 is about 544.3482915053.

The spelling of 161298598 in words is "one hundred sixty-one million, two hundred ninety-eight thousand, five hundred ninety-eight".