168145259 has 8 divisors (see below), whose sum is σ = 170520000. Its totient is φ = 165776832.

The previous prime is 168145183. The next prime is 168145291. The reversal of 168145259 is 952541861.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168145259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168148259) 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, 81857 + ... + 83885.

It is an arithmetic number, because the mean of its divisors is an integer number (21315000).

Almost surely, 2^168145259 is an apocalyptic number.

168145259 is a deficient number, since it is larger than the sum of its proper divisors (2374741).

168145259 is a wasteful number, since it uses less digits than its factorization.

168145259 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3157.

The product of its digits is 86400, while the sum is 41.

The square root of 168145259 is about 12967.0836736716. The cubic root of 168145259 is about 551.9438206408.

The spelling of 168145259 in words is "one hundred sixty-eight million, one hundred forty-five thousand, two hundred fifty-nine".