168444143 has 8 divisors (see below), whose sum is σ = 203831712. Its totient is φ = 135887616.

The previous prime is 168444121. The next prime is 168444149. The reversal of 168444143 is 341444861.

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

It is a cyclic number.

It is not a de Polignac number, because 168444143 - 2¹⁴ = 168427759 is a prime.

It is a super-2 number, since 2×168444143² = 56746858622008898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168444149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 707630 + ... + 707867.

It is an arithmetic number, because the mean of its divisors is an integer number (25478964).

Almost surely, 2^168444143 is an apocalyptic number.

168444143 is a deficient number, since it is larger than the sum of its proper divisors (35387569).

168444143 is a wasteful number, since it uses less digits than its factorization.

168444143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1415521.

The product of its digits is 36864, while the sum is 35.

The square root of 168444143 is about 12978.6032761619. The cubic root of 168444143 is about 552.2706601234.

The spelling of 168444143 in words is "one hundred sixty-eight million, four hundred forty-four thousand, one hundred forty-three".