166593449 has 4 divisors (see below), whose sum is σ = 181738320. Its totient is φ = 151448580.

The previous prime is 166593437. The next prime is 166593451. The reversal of 166593449 is 944395661.

It is a happy number.

166593449 is digitally balanced in base 2, 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 944395661 = 11 ⋅85854151.

It is a cyclic number.

It is not a de Polignac number, because 166593449 - 2⁴ = 166593433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166593649) 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, 7572419 + ... + 7572440.

It is an arithmetic number, because the mean of its divisors is an integer number (45434580).

Almost surely, 2^166593449 is an apocalyptic number.

It is an amenable number.

166593449 is a deficient number, since it is larger than the sum of its proper divisors (15144871).

166593449 is a wasteful number, since it uses less digits than its factorization.

166593449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15144870.

The product of its digits is 699840, while the sum is 47.

The square root of 166593449 is about 12907.1084678173. The cubic root of 166593449 is about 550.2406098760.

The spelling of 166593449 in words is "one hundred sixty-six million, five hundred ninety-three thousand, four hundred forty-nine".