161740274 has 24 divisors (see below), whose sum is σ = 259232400. Its totient is φ = 75662712.

The previous prime is 161740273. The next prime is 161740307. The reversal of 161740274 is 472047161.

161740274 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×161740274³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 161740274.

It is not an unprimeable number, because it can be changed into a prime (161740273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58577 + ... + 61275.

It is an arithmetic number, because the mean of its divisors is an integer number (10801350).

Almost surely, 2^161740274 is an apocalyptic number.

161740274 is a deficient number, since it is larger than the sum of its proper divisors (97492126).

161740274 is a wasteful number, since it uses less digits than its factorization.

161740274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2822 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 161740274 is about 12717.7149677133. The cubic root of 161740274 is about 544.8446927217.

The spelling of 161740274 in words is "one hundred sixty-one million, seven hundred forty thousand, two hundred seventy-four".