168243445 has 8 divisors (see below), whose sum is σ = 203230080. Its totient is φ = 133702800.

The previous prime is 168243433. The next prime is 168243457. The reversal of 168243445 is 544342861.

It is an interprime number because it is at equal distance from previous prime (168243433) and next prime (168243457).

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

It is not a de Polignac number, because 168243445 - 2²⁵ = 134689013 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 110665 + ... + 112174.

It is an arithmetic number, because the mean of its divisors is an integer number (25403760).

Almost surely, 2^168243445 is an apocalyptic number.

It is an amenable number.

168243445 is a deficient number, since it is larger than the sum of its proper divisors (34986635).

168243445 is a wasteful number, since it uses less digits than its factorization.

168243445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222995.

The product of its digits is 92160, while the sum is 37.

The square root of 168243445 is about 12970.8690919306. The cubic root of 168243445 is about 552.0512329487.

The spelling of 168243445 in words is "one hundred sixty-eight million, two hundred forty-three thousand, four hundred forty-five".