161883808 has 24 divisors (see below), whose sum is σ = 319038048. Its totient is φ = 80858304.

The previous prime is 161883793. The next prime is 161883811. The reversal of 161883808 is 808388161.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

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 3 ways as a sum of consecutive naturals, for example, 39085 + ... + 43027.

It is an arithmetic number, because the mean of its divisors is an integer number (13293252).

Almost surely, 2^161883808 is an apocalyptic number.

It is an amenable number.

161883808 is a deficient number, since it is larger than the sum of its proper divisors (157154240).

161883808 is a wasteful number, since it uses less digits than its factorization.

161883808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5236 (or 5228 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The square root of 161883808 is about 12723.3567897784. The cubic root of 161883808 is about 545.0058165078.

The spelling of 161883808 in words is "one hundred sixty-one million, eight hundred eighty-three thousand, eight hundred eight".