158238563 has 4 divisors (see below), whose sum is σ = 180844080. Its totient is φ = 135633048.

The previous prime is 158238559. The next prime is 158238583. The reversal of 158238563 is 365832851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 365832851 = 193 ⋅1895507.

It is a cyclic number.

It is not a de Polignac number, because 158238563 - 2² = 158238559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 158238563.

It is not an unprimeable number, because it can be changed into a prime (158238583) 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, 11302748 + ... + 11302761.

It is an arithmetic number, because the mean of its divisors is an integer number (45211020).

Almost surely, 2^158238563 is an apocalyptic number.

158238563 is a deficient number, since it is larger than the sum of its proper divisors (22605517).

158238563 is an equidigital number, since it uses as much as digits as its factorization.

158238563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22605516.

The product of its digits is 172800, while the sum is 41.

The square root of 158238563 is about 12579.2910372564. The cubic root of 158238563 is about 540.8839694081.

The spelling of 158238563 in words is "one hundred fifty-eight million, two hundred thirty-eight thousand, five hundred sixty-three".