168011141 has 4 divisors (see below), whose sum is σ = 170765484. Its totient is φ = 165256800.

The previous prime is 168011111. The next prime is 168011147. The reversal of 168011141 is 141110861.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17850625 + 150160516 = 4225^2 + 12254^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168011141 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168011147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1377080 + ... + 1377201.

It is an arithmetic number, because the mean of its divisors is an integer number (42691371).

Almost surely, 2^168011141 is an apocalyptic number.

It is an amenable number.

168011141 is a deficient number, since it is larger than the sum of its proper divisors (2754343).

168011141 is an equidigital number, since it uses as much as digits as its factorization.

168011141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2754342.

The product of its (nonzero) digits is 192, while the sum is 23.

The square root of 168011141 is about 12961.9111630963. The cubic root of 168011141 is about 551.7970322980.

It can be divided in two parts, 1680 and 11141, that added together give a palindrome (12821).

The spelling of 168011141 in words is "one hundred sixty-eight million, eleven thousand, one hundred forty-one".