159197740 has 48 divisors (see below), whose sum is σ = 361478880. Its totient is φ = 58544640.

The previous prime is 159197729. The next prime is 159197749. The reversal of 159197740 is 47791951.

159197740 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×159197740² = 50687840842215200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (159197749) 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, 71971 + ... + 74149.

It is an arithmetic number, because the mean of its divisors is an integer number (7530810).

Almost surely, 2^159197740 is an apocalyptic number.

159197740 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 159197740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (180739440).

159197740 is an abundant number, since it is smaller than the sum of its proper divisors (202281140).

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

159197740 is a wasteful number, since it uses less digits than its factorization.

159197740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2482 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 43.

The square root of 159197740 is about 12617.3586776314. The cubic root of 159197740 is about 541.9746405894.

The spelling of 159197740 in words is "one hundred fifty-nine million, one hundred ninety-seven thousand, seven hundred forty".