161289514 has 16 divisors (see below), whose sum is σ = 243640800. Its totient is φ = 80078544.

The previous prime is 161289487. The next prime is 161289577. The reversal of 161289514 is 415982161.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 294589 + ... + 295135.

It is an arithmetic number, because the mean of its divisors is an integer number (15227550).

Almost surely, 2^161289514 is an apocalyptic number.

161289514 is a deficient number, since it is larger than the sum of its proper divisors (82351286).

161289514 is a wasteful number, since it uses less digits than its factorization.

161289514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317.

The product of its digits is 17280, while the sum is 37.

The square root of 161289514 is about 12699.9808661273. The cubic root of 161289514 is about 544.3380724607.

The spelling of 161289514 in words is "one hundred sixty-one million, two hundred eighty-nine thousand, five hundred fourteen".