158005663 has 2 divisors, whose sum is σ = 158005664. Its totient is φ = 158005662.

The previous prime is 158005657. The next prime is 158005697. The reversal of 158005663 is 366500851.

It is an a-pointer prime, because the next prime (158005697) can be obtained adding 158005663 to its sum of digits (34).

It is a weak prime.

It is an emirp because it is prime and its reverse (366500851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158005663 - 2¹³ = 157997471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (158005643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79002831 + 79002832.

It is an arithmetic number, because the mean of its divisors is an integer number (79002832).

Almost surely, 2^158005663 is an apocalyptic number.

158005663 is a deficient number, since it is larger than the sum of its proper divisors (1).

158005663 is an equidigital number, since it uses as much as digits as its factorization.

158005663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 158005663 is about 12570.0303500031. The cubic root of 158005663 is about 540.6184763288.

The spelling of 158005663 in words is "one hundred fifty-eight million, five thousand, six hundred sixty-three".