158273903 has 4 divisors (see below), whose sum is σ = 158563800. Its totient is φ = 157984008.

The previous prime is 158273897. The next prime is 158273911. The reversal of 158273903 is 309372851.

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 158273903 - 2⁴ = 158273887 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 (158273923) 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, 144128 + ... + 145221.

It is an arithmetic number, because the mean of its divisors is an integer number (39640950).

Almost surely, 2^158273903 is an apocalyptic number.

158273903 is a deficient number, since it is larger than the sum of its proper divisors (289897).

158273903 is an equidigital number, since it uses as much as digits as its factorization.

158273903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289896.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 158273903 is about 12580.6956484926. The cubic root of 158273903 is about 540.9242322793.

The spelling of 158273903 in words is "one hundred fifty-eight million, two hundred seventy-three thousand, nine hundred three".