168608419 has 4 divisors (see below), whose sum is σ = 192695344. Its totient is φ = 144521496.

The previous prime is 168608399. The next prime is 168608437. The reversal of 168608419 is 914806861.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 168608419 - 2¹⁷ = 168477347 is a prime.

It is a super-2 number, since 2×168608419² = 56857597915359122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168608449) 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 3 ways as a sum of consecutive naturals, for example, 12043452 + ... + 12043465.

It is an arithmetic number, because the mean of its divisors is an integer number (48173836).

Almost surely, 2^168608419 is an apocalyptic number.

168608419 is a deficient number, since it is larger than the sum of its proper divisors (24086925).

168608419 is an equidigital number, since it uses as much as digits as its factorization.

168608419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24086924.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 168608419 is about 12984.9304580348. The cubic root of 168608419 is about 552.4501367065.

The spelling of 168608419 in words is "one hundred sixty-eight million, six hundred eight thousand, four hundred nineteen".