158945219 has 4 divisors (see below), whose sum is σ = 159131544. Its totient is φ = 158758896.

The previous prime is 158945209. The next prime is 158945221. The reversal of 158945219 is 912549851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158945219 - 2¹⁶ = 158879683 is a prime.

It is a super-2 number, since 2×158945219² = 50527165285915922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158945219.

It is not an unprimeable number, because it can be changed into a prime (158945209) 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, 91877 + ... + 93590.

It is an arithmetic number, because the mean of its divisors is an integer number (39782886).

Almost surely, 2^158945219 is an apocalyptic number.

158945219 is a deficient number, since it is larger than the sum of its proper divisors (186325).

158945219 is an equidigital number, since it uses as much as digits as its factorization.

158945219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186324.

The product of its digits is 129600, while the sum is 44.

The square root of 158945219 is about 12607.3478178402. The cubic root of 158945219 is about 541.6879271287.

The spelling of 158945219 in words is "one hundred fifty-eight million, nine hundred forty-five thousand, two hundred nineteen".