68158189 has 8 divisors (see below), whose sum is σ = 75251232. Its totient is φ = 61214640.

The previous prime is 68158169. The next prime is 68158201. The reversal of 68158189 is 98185186.

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 68158189 - 2⁷ = 68158061 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 (68158109) 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, 36414 + ... + 38239.

It is an arithmetic number, because the mean of its divisors is an integer number (9406404).

Almost surely, 2^68158189 is an apocalyptic number.

It is an amenable number.

68158189 is a deficient number, since it is larger than the sum of its proper divisors (7093043).

68158189 is a wasteful number, since it uses less digits than its factorization.

68158189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74747.

The product of its digits is 138240, while the sum is 46.

The square root of 68158189 is about 8255.7972964457. The cubic root of 68158189 is about 408.4817714205.

The spelling of 68158189 in words is "sixty-eight million, one hundred fifty-eight thousand, one hundred eighty-nine".