161353874 has 16 divisors (see below), whose sum is σ = 266759136. Its totient is φ = 72585600.

The previous prime is 161353873. The next prime is 161353877. The reversal of 161353874 is 478353161.

It is not an unprimeable number, because it can be changed into a prime (161353873) by changing a digit.

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, 35672 + ... + 39939.

It is an arithmetic number, because the mean of its divisors is an integer number (16672446).

Almost surely, 2^161353874 is an apocalyptic number.

161353874 is a deficient number, since it is larger than the sum of its proper divisors (105405262).

161353874 is a wasteful number, since it uses less digits than its factorization.

161353874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75721.

The product of its digits is 60480, while the sum is 38.

The square root of 161353874 is about 12702.5144754887. The cubic root of 161353874 is about 544.4104659653.

The spelling of 161353874 in words is "one hundred sixty-one million, three hundred fifty-three thousand, eight hundred seventy-four".