158817140 has 12 divisors (see below), whose sum is σ = 333516036. Its totient is φ = 63526848.

The previous prime is 158817107. The next prime is 158817151. The reversal of 158817140 is 41718851.

158817140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 86192656 + 72624484 = 9284^2 + 8522^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 158817140.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3970409 + ... + 3970448.

It is an arithmetic number, because the mean of its divisors is an integer number (27793003).

Almost surely, 2^158817140 is an apocalyptic number.

158817140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

158817140 is an abundant number, since it is smaller than the sum of its proper divisors (174698896).

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

158817140 is a wasteful number, since it uses less digits than its factorization.

158817140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7940866 (or 7940864 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 158817140 is about 12602.2672563313. The cubic root of 158817140 is about 541.5423895821.

The spelling of 158817140 in words is "one hundred fifty-eight million, eight hundred seventeen thousand, one hundred forty".