158618232 has 96 divisors (see below), whose sum is σ = 462009600. Its totient is φ = 49004352.

The previous prime is 158618219. The next prime is 158618237. The reversal of 158618232 is 232816851.

It is a happy number.

158618232 is a `hidden beast` number, since 1 + 5 + 8 + 618 + 2 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158618237) 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 23 ways as a sum of consecutive naturals, for example, 63063 + ... + 65529.

It is an arithmetic number, because the mean of its divisors is an integer number (4812600).

Almost surely, 2^158618232 is an apocalyptic number.

158618232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 158618232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231004800).

158618232 is an abundant number, since it is smaller than the sum of its proper divisors (303391368).

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

158618232 is a wasteful number, since it uses less digits than its factorization.

158618232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2545 (or 2538 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 158618232 is about 12594.3730292540. The cubic root of 158618232 is about 541.3162130823.

The spelling of 158618232 in words is "one hundred fifty-eight million, six hundred eighteen thousand, two hundred thirty-two".