158197536 has 120 divisors (see below), whose sum is σ = 531780480. Its totient is φ = 45194112.

The previous prime is 158197513. The next prime is 158197537. The reversal of 158197536 is 635791851.

It is a happy number.

158197536 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 158197491 and 158197500.

It is not an unprimeable number, because it can be changed into a prime (158197537) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13785 + ... + 22503.

It is an arithmetic number, because the mean of its divisors is an integer number (4431504).

Almost surely, 2^158197536 is an apocalyptic number.

158197536 is a gapful number since it is divisible by the number (16) 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 158197536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265890240).

158197536 is an abundant number, since it is smaller than the sum of its proper divisors (373582944).

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

158197536 is an equidigital number, since it uses as much as digits as its factorization.

158197536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8748 (or 8731 counting only the distinct ones).

The product of its digits is 226800, while the sum is 45.

The square root of 158197536 is about 12577.6601957598. The cubic root of 158197536 is about 540.8372198162.

The spelling of 158197536 in words is "one hundred fifty-eight million, one hundred ninety-seven thousand, five hundred thirty-six".