158318263 has 4 divisors (see below), whose sum is σ = 167631120. Its totient is φ = 149005408.

The previous prime is 158318257. The next prime is 158318309. The reversal of 158318263 is 362813851.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 362813851 = 619 ⋅586129.

It is a de Polignac number, because none of the positive numbers 2^k-158318263 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 (158318233) 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, 4656403 + ... + 4656436.

It is an arithmetic number, because the mean of its divisors is an integer number (41907780).

Almost surely, 2^158318263 is an apocalyptic number.

158318263 is a deficient number, since it is larger than the sum of its proper divisors (9312857).

158318263 is an equidigital number, since it uses as much as digits as its factorization.

158318263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9312856.

The product of its digits is 34560, while the sum is 37.

The square root of 158318263 is about 12582.4585435439. The cubic root of 158318263 is about 540.9747631566.

The spelling of 158318263 in words is "one hundred fifty-eight million, three hundred eighteen thousand, two hundred sixty-three".