158791680 has 144 divisors (see below), whose sum is σ = 550662840. Its totient is φ = 42319872.

The previous prime is 158791667. The next prime is 158791681. The reversal of 158791680 is 86197851.

158791680 is a `hidden beast` number, since 1 + 587 + 9 + 1 + 68 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158791681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 91299 + ... + 93021.

Almost surely, 2^158791680 is an apocalyptic number.

158791680 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 158791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275331420).

158791680 is an abundant number, since it is smaller than the sum of its proper divisors (391871160).

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

158791680 is a wasteful number, since it uses less digits than its factorization.

158791680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1756 (or 1733 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 45.

The square root of 158791680 is about 12601.2570801488. The cubic root of 158791680 is about 541.5134497878.

The spelling of 158791680 in words is "one hundred fifty-eight million, seven hundred ninety-one thousand, six hundred eighty".