159641018 has 4 divisors (see below), whose sum is σ = 239461530. Its totient is φ = 79820508.

The previous prime is 159640993. The next prime is 159641023. The reversal of 159641018 is 810146951.

159641018 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 150381169 + 9259849 = 12263^2 + 3043^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39910253 + ... + 39910256.

Almost surely, 2^159641018 is an apocalyptic number.

159641018 is a deficient number, since it is larger than the sum of its proper divisors (79820512).

159641018 is an equidigital number, since it uses as much as digits as its factorization.

159641018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79820511.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 159641018 is about 12634.9126629352. The cubic root of 159641018 is about 542.4772080155.

Adding to 159641018 its reverse (810146951), we get a palindrome (969787969).

The spelling of 159641018 in words is "one hundred fifty-nine million, six hundred forty-one thousand, eighteen".