159191478 has 24 divisors (see below), whose sum is σ = 349284000. Its totient is φ = 52391664.

The previous prime is 159191437. The next prime is 159191503. The reversal of 159191478 is 874191951.

It is a happy number.

159191478 is a `hidden beast` number, since 1 + 5 + 91 + 91 + 478 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54553 + ... + 57396.

It is an arithmetic number, because the mean of its divisors is an integer number (14553500).

Almost surely, 2^159191478 is an apocalyptic number.

159191478 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

159191478 is an abundant number, since it is smaller than the sum of its proper divisors (190092522).

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

159191478 is a wasteful number, since it uses less digits than its factorization.

159191478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112036 (or 112033 counting only the distinct ones).

The product of its digits is 90720, while the sum is 45.

The square root of 159191478 is about 12617.1105249974. The cubic root of 159191478 is about 541.9675343543.

The spelling of 159191478 in words is "one hundred fifty-nine million, one hundred ninety-one thousand, four hundred seventy-eight".