159818602 has 4 divisors (see below), whose sum is σ = 239727906. Its totient is φ = 79909300.

The previous prime is 159818599. The next prime is 159818627. The reversal of 159818602 is 206818951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 206818951 = 257 ⋅804743.

It can be written as a sum of positive squares in only one way, i.e., 84805681 + 75012921 = 9209^2 + 8661^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39954649 + ... + 39954652.

Almost surely, 2^159818602 is an apocalyptic number.

159818602 is a deficient number, since it is larger than the sum of its proper divisors (79909304).

159818602 is an equidigital number, since it uses as much as digits as its factorization.

159818602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79909303.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 159818602 is about 12641.9382216494. The cubic root of 159818602 is about 542.6782832671.

The spelling of 159818602 in words is "one hundred fifty-nine million, eight hundred eighteen thousand, six hundred two".