161568334 has 8 divisors (see below), whose sum is σ = 242487648. Its totient is φ = 80739120.

The previous prime is 161568301. The next prime is 161568359. The reversal of 161568334 is 433865161.

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

It is a super-2 number, since 2×161568334² = 52208653103071112, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 161568293 and 161568302.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 17847 + ... + 25330.

It is an arithmetic number, because the mean of its divisors is an integer number (30310956).

Almost surely, 2^161568334 is an apocalyptic number.

161568334 is a deficient number, since it is larger than the sum of its proper divisors (80919314).

161568334 is a wasteful number, since it uses less digits than its factorization.

161568334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45050.

The product of its digits is 51840, while the sum is 37.

The square root of 161568334 is about 12710.9533080725. The cubic root of 161568334 is about 544.6515563023.

The spelling of 161568334 in words is "one hundred sixty-one million, five hundred sixty-eight thousand, three hundred thirty-four".