168018157 has 8 divisors (see below), whose sum is σ = 182039616. Its totient is φ = 154456512.

The previous prime is 168018139. The next prime is 168018173. The reversal of 168018157 is 751810861.

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 168018157 - 2¹¹ = 168016109 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 (168018127) 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, 114193 + ... + 115654.

It is an arithmetic number, because the mean of its divisors is an integer number (22754952).

Almost surely, 2^168018157 is an apocalyptic number.

168018157 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

168018157 is a deficient number, since it is larger than the sum of its proper divisors (14021459).

168018157 is a wasteful number, since it uses less digits than its factorization.

168018157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229907.

The product of its (nonzero) digits is 13440, while the sum is 37.

The square root of 168018157 is about 12962.1817993731. The cubic root of 168018157 is about 551.8047130467.

The spelling of 168018157 in words is "one hundred sixty-eight million, eighteen thousand, one hundred fifty-seven".