159493387 has 4 divisors (see below), whose sum is σ = 159617656. Its totient is φ = 159369120.

The previous prime is 159493379. The next prime is 159493409. The reversal of 159493387 is 783394951.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159493387 - 2³ = 159493379 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159493387.

It is not an unprimeable number, because it can be changed into a prime (159493307) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60189 + ... + 62782.

It is an arithmetic number, because the mean of its divisors is an integer number (39904414).

Almost surely, 2^159493387 is an apocalyptic number.

159493387 is a deficient number, since it is larger than the sum of its proper divisors (124269).

159493387 is a wasteful number, since it uses less digits than its factorization.

159493387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124268.

The product of its digits is 816480, while the sum is 49.

The square root of 159493387 is about 12629.0691264242. The cubic root of 159493387 is about 542.3099344799.

The spelling of 159493387 in words is "one hundred fifty-nine million, four hundred ninety-three thousand, three hundred eighty-seven".