158139384 has 96 divisors (see below), whose sum is σ = 432875520. Its totient is φ = 48117888.

The previous prime is 158139361. The next prime is 158139403. The reversal of 158139384 is 483931851.

158139384 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514959 + ... + 515265.

It is an arithmetic number, because the mean of its divisors is an integer number (4509120).

Almost surely, 2^158139384 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 158139384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216437760).

158139384 is an abundant number, since it is smaller than the sum of its proper divisors (274736136).

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

158139384 is a wasteful number, since it uses less digits than its factorization.

158139384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469 (or 452 counting only the distinct ones).

The product of its digits is 103680, while the sum is 42.

The square root of 158139384 is about 12575.3482655551. The cubic root of 158139384 is about 540.7709427189.

The spelling of 158139384 in words is "one hundred fifty-eight million, one hundred thirty-nine thousand, three hundred eighty-four".