159785387 has 4 divisors (see below), whose sum is σ = 160393200. Its totient is φ = 159177576.

The previous prime is 159785369. The next prime is 159785399. The reversal of 159785387 is 783587951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783587951 = 89 ⋅8804359.

It is a cyclic number.

It is not a de Polignac number, because 159785387 - 2¹⁴ = 159769003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159785317) 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, 303512 + ... + 304037.

It is an arithmetic number, because the mean of its divisors is an integer number (40098300).

Almost surely, 2^159785387 is an apocalyptic number.

159785387 is a deficient number, since it is larger than the sum of its proper divisors (607813).

159785387 is an equidigital number, since it uses as much as digits as its factorization.

159785387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607812.

The product of its digits is 2116800, while the sum is 53.

The square root of 159785387 is about 12640.6244703337. The cubic root of 159785387 is about 542.6406858331.

The spelling of 159785387 in words is "one hundred fifty-nine million, seven hundred eighty-five thousand, three hundred eighty-seven".