158105859 has 16 divisors (see below), whose sum is σ = 229063680. Its totient is φ = 96634080.

The previous prime is 158105851. The next prime is 158105861. The reversal of 158105859 is 958501851.

It is not a de Polignac number, because 158105859 - 2³ = 158105851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 158105859.

It is not an unprimeable number, because it can be changed into a prime (158105851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42972 + ... + 46505.

It is an arithmetic number, because the mean of its divisors is an integer number (14316480).

Almost surely, 2^158105859 is an apocalyptic number.

158105859 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

158105859 is a deficient number, since it is larger than the sum of its proper divisors (70957821).

158105859 is a wasteful number, since it uses less digits than its factorization.

158105859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89530.

The product of its (nonzero) digits is 72000, while the sum is 42.

The square root of 158105859 is about 12574.0152298301. The cubic root of 158105859 is about 540.7327261644.

The spelling of 158105859 in words is "one hundred fifty-eight million, one hundred five thousand, eight hundred fifty-nine".