158668146 has 160 divisors (see below), whose sum is σ = 448842240. Its totient is φ = 40777344.

The previous prime is 158668141. The next prime is 158668189. The reversal of 158668146 is 641866851.

158668146 is a `hidden beast` number, since 1 + 586 + 68 + 1 + 4 + 6 = 666.

158668146 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158668141) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 692760 + ... + 692988.

It is an arithmetic number, because the mean of its divisors is an integer number (2805264).

Almost surely, 2^158668146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158668146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224421120).

158668146 is an abundant number, since it is smaller than the sum of its proper divisors (290174094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158668146 is a wasteful number, since it uses less digits than its factorization.

158668146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310 (or 301 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 158668146 is about 12596.3544726242. The cubic root of 158668146 is about 541.3729876062.

The spelling of 158668146 in words is "one hundred fifty-eight million, six hundred sixty-eight thousand, one hundred forty-six".