158932191 has 16 divisors (see below), whose sum is σ = 232732800. Its totient is φ = 95673120.

The previous prime is 158932187. The next prime is 158932211. The reversal of 158932191 is 191239851.

It is not a de Polignac number, because 158932191 - 2² = 158932187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158932591) 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 15 ways as a sum of consecutive naturals, for example, 11245 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (14545800).

Almost surely, 2^158932191 is an apocalyptic number.

158932191 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

158932191 is a deficient number, since it is larger than the sum of its proper divisors (73800609).

158932191 is a wasteful number, since it uses less digits than its factorization.

158932191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32486.

The product of its digits is 19440, while the sum is 39.

The square root of 158932191 is about 12606.8311244341. The cubic root of 158932191 is about 541.6731268447.

The spelling of 158932191 in words is "one hundred fifty-eight million, nine hundred thirty-two thousand, one hundred ninety-one".