158188040 has 128 divisors (see below), whose sum is σ = 391910400. Its totient is φ = 57308160.

The previous prime is 158188039. The next prime is 158188049. The reversal of 158188040 is 40881851.

It is not an unprimeable number, because it can be changed into a prime (158188049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1905839 + ... + 1905921.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^158188040 is an apocalyptic number.

158188040 is a gapful number since it is divisible by the number (10) 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 158188040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (195955200).

158188040 is an abundant number, since it is smaller than the sum of its proper divisors (233722360).

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

158188040 is a wasteful number, since it uses less digits than its factorization.

158188040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 203 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 35.

The square root of 158188040 is about 12577.2826953997. The cubic root of 158188040 is about 540.8263981284.

The spelling of 158188040 in words is "one hundred fifty-eight million, one hundred eighty-eight thousand, forty".