159223538 has 4 divisors (see below), whose sum is σ = 238835310. Its totient is φ = 79611768.

The previous prime is 159223529. The next prime is 159223567. The reversal of 159223538 is 835322951.

159223538 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., 83411689 + 75811849 = 9133^2 + 8707^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39805883 + ... + 39805886.

Almost surely, 2^159223538 is an apocalyptic number.

159223538 is a deficient number, since it is larger than the sum of its proper divisors (79611772).

159223538 is an equidigital number, since it uses as much as digits as its factorization.

159223538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79611771.

The product of its digits is 64800, while the sum is 38.

The square root of 159223538 is about 12618.3809579518. The cubic root of 159223538 is about 542.0039146788.

The spelling of 159223538 in words is "one hundred fifty-nine million, two hundred twenty-three thousand, five hundred thirty-eight".