158197860 has 144 divisors (see below), whose sum is σ = 509885376. Its totient is φ = 41150592.

The previous prime is 158197859. The next prime is 158197877. The reversal of 158197860 is 68791851.

158197860 is a `hidden beast` number, since 1 + 581 + 9 + 7 + 8 + 60 = 666.

158197860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 208602 + ... + 209358.

Almost surely, 2^158197860 is an apocalyptic number.

158197860 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 158197860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254942688).

158197860 is an abundant number, since it is smaller than the sum of its proper divisors (351687516).

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

158197860 is a wasteful number, since it uses less digits than its factorization.

158197860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 824 (or 810 counting only the distinct ones).

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

The square root of 158197860 is about 12577.6730757323. The cubic root of 158197860 is about 540.8375890405.

The spelling of 158197860 in words is "one hundred fifty-eight million, one hundred ninety-seven thousand, eight hundred sixty".