158163505 has 32 divisors (see below), whose sum is σ = 205286400. Its totient is φ = 116625600.

The previous prime is 158163497. The next prime is 158163517. The reversal of 158163505 is 505361851.

It is not a de Polignac number, because 158163505 - 2³ = 158163497 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 883506 + ... + 883684.

It is an arithmetic number, because the mean of its divisors is an integer number (6415200).

Almost surely, 2^158163505 is an apocalyptic number.

It is an amenable number.

158163505 is a deficient number, since it is larger than the sum of its proper divisors (47122895).

158163505 is a wasteful number, since it uses less digits than its factorization.

158163505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 158163505 is about 12576.3072879125. The cubic root of 158163505 is about 540.7984359181.

It can be divided in two parts, 15816 and 3505, that added together give a square (19321 = 139²).

The spelling of 158163505 in words is "one hundred fifty-eight million, one hundred sixty-three thousand, five hundred five".