159189540 has 48 divisors (see below), whose sum is σ = 457783872. Its totient is φ = 41302656.

The previous prime is 159189529. The next prime is 159189551. The reversal of 159189540 is 45981951.

It is an interprime number because it is at equal distance from previous prime (159189529) and next prime (159189551).

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 159189492 and 159189501.

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, 33634 + ... + 38073.

It is an arithmetic number, because the mean of its divisors is an integer number (9537164).

Almost surely, 2^159189540 is an apocalyptic number.

159189540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

159189540 is an abundant number, since it is smaller than the sum of its proper divisors (298594332).

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

159189540 is a wasteful number, since it uses less digits than its factorization.

159189540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71756 (or 71754 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 42.

The square root of 159189540 is about 12617.0337242951. The cubic root of 159189540 is about 541.9653350378.

The spelling of 159189540 in words is "one hundred fifty-nine million, one hundred eighty-nine thousand, five hundred forty".