159398540 has 48 divisors (see below), whose sum is σ = 383346432. Its totient is φ = 54538176.

The previous prime is 159398539. The next prime is 159398557. The reversal of 159398540 is 45893951.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 159398491 and 159398500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94787 + ... + 96453.

It is an arithmetic number, because the mean of its divisors is an integer number (7986384).

Almost surely, 2^159398540 is an apocalyptic number.

159398540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159398540 is an abundant number, since it is smaller than the sum of its proper divisors (223947892).

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

159398540 is a wasteful number, since it uses less digits than its factorization.

159398540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366 (or 2364 counting only the distinct ones).

The product of its (nonzero) digits is 194400, while the sum is 44.

The square root of 159398540 is about 12625.3134614551. The cubic root of 159398540 is about 542.2024134708.

The spelling of 159398540 in words is "one hundred fifty-nine million, three hundred ninety-eight thousand, five hundred forty".