161280074 has 8 divisors (see below), whose sum is σ = 243272160. Its totient is φ = 80189356.

The previous prime is 161280061. The next prime is 161280079. The reversal of 161280074 is 470082161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×161280074² = 52022524538890952, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (161280079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 224894 + ... + 225609.

It is an arithmetic number, because the mean of its divisors is an integer number (30409020).

Almost surely, 2^161280074 is an apocalyptic number.

161280074 is a deficient number, since it is larger than the sum of its proper divisors (81992086).

161280074 is a wasteful number, since it uses less digits than its factorization.

161280074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450684.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 161280074 is about 12699.6092065858. The cubic root of 161280074 is about 544.3274525274.

The spelling of 161280074 in words is "one hundred sixty-one million, two hundred eighty thousand, seventy-four".