159438533 has 4 divisors (see below), whose sum is σ = 160153728. Its totient is φ = 158723340.

The previous prime is 159438527. The next prime is 159438569. The reversal of 159438533 is 335834951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 159438533 - 2¹⁴ = 159422149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159438133) 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, 357263 + ... + 357708.

It is an arithmetic number, because the mean of its divisors is an integer number (40038432).

Almost surely, 2^159438533 is an apocalyptic number.

It is an amenable number.

159438533 is a deficient number, since it is larger than the sum of its proper divisors (715195).

159438533 is an equidigital number, since it uses as much as digits as its factorization.

159438533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715194.

The product of its digits is 194400, while the sum is 41.

The square root of 159438533 is about 12626.8972039848. The cubic root of 159438533 is about 542.2477557679.

The spelling of 159438533 in words is "one hundred fifty-nine million, four hundred thirty-eight thousand, five hundred thirty-three".