158436564 has 96 divisors (see below), whose sum is σ = 438337536. Its totient is φ = 43908480.

The previous prime is 158436559. The next prime is 158436569. The reversal of 158436564 is 465634851.

It is an interprime number because it is at equal distance from previous prime (158436559) and next prime (158436569).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158436569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 217569 + ... + 218295.

It is an arithmetic number, because the mean of its divisors is an integer number (4566016).

Almost surely, 2^158436564 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 158436564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219168768).

158436564 is an abundant number, since it is smaller than the sum of its proper divisors (279900972).

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

158436564 is a wasteful number, since it uses less digits than its factorization.

158436564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 885 (or 883 counting only the distinct ones).

The product of its digits is 345600, while the sum is 42.

The square root of 158436564 is about 12587.1586944791. The cubic root of 158436564 is about 541.1094747609.

The spelling of 158436564 in words is "one hundred fifty-eight million, four hundred thirty-six thousand, five hundred sixty-four".