158418 has 24 divisors (see below), whose sum is σ = 370188. Its totient is φ = 48672.

The previous prime is 158407. The next prime is 158419. The reversal of 158418 is 814851.

158418 is nontrivially palindromic in base 15.

158418 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 154449 + 3969 = 393^2 + 63^2 .

It is a junction number, because it is equal to n+sod(n) for n = 158391 and 158400.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 158418.

It is not an unprimeable number, because it can be changed into a prime (158419) by changing a digit.

158418 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105 + ... + 572.

2¹⁵⁸⁴¹⁸ is an apocalyptic number.

158418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

158418 is an abundant number, since it is smaller than the sum of its proper divisors (211770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

158418 is a wasteful number, since it uses less digits than its factorization.

158418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698 (or 695 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 158418 is about 398.0175875511. The cubic root of 158418 is about 54.1088340017.

It can be divided in two parts, 158 and 418, that added together give a square (576 = 24²).

The spelling of 158418 in words is "one hundred fifty-eight thousand, four hundred eighteen".