168144407 has 8 divisors (see below), whose sum is σ = 175899600. Its totient is φ = 160519744.

The previous prime is 168144397. The next prime is 168144413. The reversal of 168144407 is 704441861.

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 168144407 - 2⁶ = 168144343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168144437) by changing a digit.

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, 29993 + ... + 35154.

It is an arithmetic number, because the mean of its divisors is an integer number (21987450).

Almost surely, 2^168144407 is an apocalyptic number.

168144407 is a deficient number, since it is larger than the sum of its proper divisors (7755193).

168144407 is an equidigital number, since it uses as much as digits as its factorization.

168144407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65265.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 168144407 is about 12967.0508212161. The cubic root of 168144407 is about 551.9428883974.

The spelling of 168144407 in words is "one hundred sixty-eight million, one hundred forty-four thousand, four hundred seven".