158222369 has 4 divisors (see below), whose sum is σ = 158261040. Its totient is φ = 158183700.

The previous prime is 158222353. The next prime is 158222377. The reversal of 158222369 is 963222851.

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, and also an emirpimes, since its reverse is a distinct semiprime: 963222851 = 4643 ⋅207457.

It is a cyclic number.

It is not a de Polignac number, because 158222369 - 2⁴ = 158222353 is a prime.

It is a super-2 number, since 2×158222369² = 50068636103944322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158222269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12359 + ... + 21660.

It is an arithmetic number, because the mean of its divisors is an integer number (39565260).

Almost surely, 2^158222369 is an apocalyptic number.

It is an amenable number.

158222369 is a deficient number, since it is larger than the sum of its proper divisors (38671).

158222369 is an equidigital number, since it uses as much as digits as its factorization.

158222369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38670.

The product of its digits is 51840, while the sum is 38.

The square root of 158222369 is about 12578.6473438124. The cubic root of 158222369 is about 540.8655175767.

The spelling of 158222369 in words is "one hundred fifty-eight million, two hundred twenty-two thousand, three hundred sixty-nine".