158903 has 4 divisors (see below), whose sum is σ = 160248. Its totient is φ = 157560.

The previous prime is 158881. The next prime is 158909. The reversal of 158903 is 309851.

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 158903 - 2⁸ = 158647 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158909) 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, 476 + ... + 737.

It is an arithmetic number, because the mean of its divisors is an integer number (40062).

2¹⁵⁸⁹⁰³ is an apocalyptic number.

158903 is a deficient number, since it is larger than the sum of its proper divisors (1345).

158903 is a wasteful number, since it uses less digits than its factorization.

158903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1344.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 158903 is about 398.6263914996. The cubic root of 158903 is about 54.1639961866.

The spelling of 158903 in words is "one hundred fifty-eight thousand, nine hundred three".