158910189 has 4 divisors (see below), whose sum is σ = 211880256. Its totient is φ = 105940124.

The previous prime is 158910173. The next prime is 158910229. The reversal of 158910189 is 981019851.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 158910189 - 2⁴ = 158910173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158910189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158912189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26485029 + ... + 26485034.

It is an arithmetic number, because the mean of its divisors is an integer number (52970064).

Almost surely, 2^158910189 is an apocalyptic number.

It is an amenable number.

158910189 is a deficient number, since it is larger than the sum of its proper divisors (52970067).

158910189 is an equidigital number, since it uses as much as digits as its factorization.

158910189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52970066.

The product of its (nonzero) digits is 25920, while the sum is 42.

The square root of 158910189 is about 12605.9584720877. The cubic root of 158910189 is about 541.6481299324.

The spelling of 158910189 in words is "one hundred fifty-eight million, nine hundred ten thousand, one hundred eighty-nine".