158405166 has 64 divisors (see below), whose sum is σ = 376761600. Its totient is φ = 49183200.

The previous prime is 158405161. The next prime is 158405173. The reversal of 158405166 is 661504851.

It is a self number, because there is not a number n which added to its sum of digits gives 158405166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158405161) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61321 + ... + 63851.

It is an arithmetic number, because the mean of its divisors is an integer number (5886900).

Almost surely, 2^158405166 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158405166, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188380800).

158405166 is an abundant number, since it is smaller than the sum of its proper divisors (218356434).

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

158405166 is a wasteful number, since it uses less digits than its factorization.

158405166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2622 (or 2616 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 158405166 is about 12585.9114091908. The cubic root of 158405166 is about 541.0737277984.

The spelling of 158405166 in words is "one hundred fifty-eight million, four hundred five thousand, one hundred sixty-six".