158181716 has 48 divisors (see below), whose sum is σ = 356278272. Its totient is φ = 59637600.

The previous prime is 158181713. The next prime is 158181757. The reversal of 158181716 is 617181851.

158181716 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 158181716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158181713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265 + ... + 17831.

It is an arithmetic number, because the mean of its divisors is an integer number (7422464).

Almost surely, 2^158181716 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 158181716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178139136).

158181716 is an abundant number, since it is smaller than the sum of its proper divisors (198096556).

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

158181716 is a wasteful number, since it uses less digits than its factorization.

158181716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16620 (or 16618 counting only the distinct ones).

The product of its digits is 13440, while the sum is 38.

The square root of 158181716 is about 12577.0312872315. The cubic root of 158181716 is about 540.8191910271.

The spelling of 158181716 in words is "one hundred fifty-eight million, one hundred eighty-one thousand, seven hundred sixteen".