158998 has 16 divisors (see below), whose sum is σ = 280224. Its totient is φ = 66240.

The previous prime is 158993. The next prime is 159013. The reversal of 158998 is 899851.

158998 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 158998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 436 + ... + 712.

It is an arithmetic number, because the mean of its divisors is an integer number (17514).

2¹⁵⁸⁹⁹⁸ is an apocalyptic number.

158998 is a deficient number, since it is larger than the sum of its proper divisors (121226).

158998 is a wasteful number, since it uses less digits than its factorization.

158998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its digits is 25920, while the sum is 40.

The square root of 158998 is about 398.7455328903. The cubic root of 158998 is about 54.1747879999.

It can be divided in two parts, 158 and 998, that added together give a square (1156 = 34²).

The spelling of 158998 in words is "one hundred fifty-eight thousand, nine hundred ninety-eight".