161842562 has 16 divisors (see below), whose sum is σ = 287012160. Its totient is φ = 66969168.

The previous prime is 161842547. The next prime is 161842607. The reversal of 161842562 is 265248161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198908 + ... + 199719.

It is an arithmetic number, because the mean of its divisors is an integer number (17938260).

Almost surely, 2^161842562 is an apocalyptic number.

161842562 is a deficient number, since it is larger than the sum of its proper divisors (125169598).

161842562 is a wasteful number, since it uses less digits than its factorization.

161842562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398665.

The product of its digits is 23040, while the sum is 35.

The square root of 161842562 is about 12721.7358092361. The cubic root of 161842562 is about 544.9595256535.

The spelling of 161842562 in words is "one hundred sixty-one million, eight hundred forty-two thousand, five hundred sixty-two".