158194027 has 4 divisors (see below), whose sum is σ = 167499576. Its totient is φ = 148888480.

The previous prime is 158194021. The next prime is 158194063. The reversal of 158194027 is 720491851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 720491851 = 1801 ⋅400051.

It is a cyclic number.

It is not a de Polignac number, because 158194027 - 2¹⁵ = 158161259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158194021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4652749 + ... + 4652782.

It is an arithmetic number, because the mean of its divisors is an integer number (41874894).

Almost surely, 2^158194027 is an apocalyptic number.

158194027 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

158194027 is a deficient number, since it is larger than the sum of its proper divisors (9305549).

158194027 is an equidigital number, since it uses as much as digits as its factorization.

158194027 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9305548.

The product of its (nonzero) digits is 20160, while the sum is 37.

The square root of 158194027 is about 12577.5207016327. The cubic root of 158194027 is about 540.8332209932.

The spelling of 158194027 in words is "one hundred fifty-eight million, one hundred ninety-four thousand, twenty-seven".