158966187 has 16 divisors (see below), whose sum is σ = 216029088. Its totient is φ = 103956480.

The previous prime is 158966177. The next prime is 158966189. The reversal of 158966187 is 781669851.

It is not a de Polignac number, because 158966187 - 2¹⁵ = 158933419 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158966189) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40387 + ... + 44147.

It is an arithmetic number, because the mean of its divisors is an integer number (13501818).

Almost surely, 2^158966187 is an apocalyptic number.

158966187 is a deficient number, since it is larger than the sum of its proper divisors (57062901).

158966187 is a wasteful number, since it uses less digits than its factorization.

158966187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4030.

The product of its digits is 725760, while the sum is 51.

The square root of 158966187 is about 12608.1793689652. The cubic root of 158966187 is about 541.7117458446.

It can be divided in two parts, 1589 and 66187, that added together give a palindrome (67776).

The spelling of 158966187 in words is "one hundred fifty-eight million, nine hundred sixty-six thousand, one hundred eighty-seven".