159475493 has 4 divisors (see below), whose sum is σ = 167868960. Its totient is φ = 151082028.

The previous prime is 159475489. The next prime is 159475499. The reversal of 159475493 is 394574951.

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 159475493 - 2² = 159475489 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159475499) 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, 4196705 + ... + 4196742.

It is an arithmetic number, because the mean of its divisors is an integer number (41967240).

Almost surely, 2^159475493 is an apocalyptic number.

It is an amenable number.

159475493 is a deficient number, since it is larger than the sum of its proper divisors (8393467).

159475493 is an equidigital number, since it uses as much as digits as its factorization.

159475493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8393466.

The product of its digits is 680400, while the sum is 47.

The square root of 159475493 is about 12628.3606616219. The cubic root of 159475493 is about 542.2896526424.

The spelling of 159475493 in words is "one hundred fifty-nine million, four hundred seventy-five thousand, four hundred ninety-three".