158918436 has 60 divisors (see below), whose sum is σ = 416656240. Its totient is φ = 52818480.

The previous prime is 158918423. The next prime is 158918467. The reversal of 158918436 is 634819851.

158918436 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 158918391 and 158918400.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 184575 + ... + 185433.

Almost surely, 2^158918436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158918436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (208328120).

158918436 is an abundant number, since it is smaller than the sum of its proper divisors (257737804).

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

158918436 is a wasteful number, since it uses less digits than its factorization.

158918436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1446 (or 1435 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 158918436 is about 12606.2855750614. The cubic root of 158918436 is about 541.6574997844.

The spelling of 158918436 in words is "one hundred fifty-eight million, nine hundred eighteen thousand, four hundred thirty-six".