161098874 has 4 divisors (see below), whose sum is σ = 241648314. Its totient is φ = 80549436.

The previous prime is 161098867. The next prime is 161098897. The reversal of 161098874 is 478890161.

161098874 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, and also an emirpimes, since its reverse is a distinct semiprime: 478890161 = 7603 ⋅62987.

It can be written as a sum of positive squares in only one way, i.e., 159390625 + 1708249 = 12625^2 + 1307^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40274717 + ... + 40274720.

Almost surely, 2^161098874 is an apocalyptic number.

161098874 is a deficient number, since it is larger than the sum of its proper divisors (80549440).

161098874 is an equidigital number, since it uses as much as digits as its factorization.

161098874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80549439.

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

The square root of 161098874 is about 12692.4731238636. The cubic root of 161098874 is about 544.1235234386.

The spelling of 161098874 in words is "one hundred sixty-one million, ninety-eight thousand, eight hundred seventy-four".