158315436 has 18 divisors (see below), whose sum is σ = 400186332. Its totient is φ = 52771800.

The previous prime is 158315431. The next prime is 158315453. The reversal of 158315436 is 634513851.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 4397651 = 158315436 / (1 + 5 + 8 + 3 + 1 + 5 + 4 + 3 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 158315436.

It is not an unprimeable number, because it can be changed into a prime (158315431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2198790 + ... + 2198861.

It is an arithmetic number, because the mean of its divisors is an integer number (22232574).

Almost surely, 2^158315436 is an apocalyptic number.

It is an amenable number.

158315436 is an abundant number, since it is smaller than the sum of its proper divisors (241870896).

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

158315436 is a wasteful number, since it uses less digits than its factorization.

158315436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4397661 (or 4397656 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 158315436 is about 12582.3462041068. The cubic root of 158315436 is about 540.9715431770.

The spelling of 158315436 in words is "one hundred fifty-eight million, three hundred fifteen thousand, four hundred thirty-six".