159187878 has 12 divisors (see below), whose sum is σ = 344907108. Its totient is φ = 53062620.

The previous prime is 159187843. The next prime is 159187879. The reversal of 159187878 is 878781951.

159187878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159187879) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4421868 + ... + 4421903.

It is an arithmetic number, because the mean of its divisors is an integer number (28742259).

Almost surely, 2^159187878 is an apocalyptic number.

159187878 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

159187878 is an abundant number, since it is smaller than the sum of its proper divisors (185719230).

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

159187878 is a wasteful number, since it uses less digits than its factorization.

159187878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8843779 (or 8843776 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 54.

The square root of 159187878 is about 12616.9678607818. The cubic root of 159187878 is about 541.9634489224.

The spelling of 159187878 in words is "one hundred fifty-nine million, one hundred eighty-seven thousand, eight hundred seventy-eight".