168159887 has 4 divisors (see below), whose sum is σ = 192182736. Its totient is φ = 144137040.

The previous prime is 168159881. The next prime is 168159917. The reversal of 168159887 is 788951861.

168159887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 168159887 - 2¹⁰ = 168158863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168159881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12011414 + ... + 12011427.

It is an arithmetic number, because the mean of its divisors is an integer number (48045684).

Almost surely, 2^168159887 is an apocalyptic number.

168159887 is a deficient number, since it is larger than the sum of its proper divisors (24022849).

168159887 is an equidigital number, since it uses as much as digits as its factorization.

168159887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24022848.

The product of its digits is 967680, while the sum is 53.

The square root of 168159887 is about 12967.6477049618. The cubic root of 168159887 is about 551.9598258499.

The spelling of 168159887 in words is "one hundred sixty-eight million, one hundred fifty-nine thousand, eight hundred eighty-seven".