159842818 has 4 divisors (see below), whose sum is σ = 239764230. Its totient is φ = 79921408.

The previous prime is 159842803. The next prime is 159842819. The reversal of 159842818 is 818248951.

It is a happy number.

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., 123276609 + 36566209 = 11103^2 + 6047^2 .

It is a super-2 number, since 2×159842818² = 51099452932362248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (159842819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39960703 + ... + 39960706.

Almost surely, 2^159842818 is an apocalyptic number.

159842818 is a deficient number, since it is larger than the sum of its proper divisors (79921412).

159842818 is an equidigital number, since it uses as much as digits as its factorization.

159842818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79921411.

The product of its digits is 184320, while the sum is 46.

The square root of 159842818 is about 12642.8959499001. The cubic root of 159842818 is about 542.7056910771.

The spelling of 159842818 in words is "one hundred fifty-nine million, eight hundred forty-two thousand, eight hundred eighteen".