166100593 has 4 divisors (see below), whose sum is σ = 166126500. Its totient is φ = 166074688.

The previous prime is 166100567. The next prime is 166100629. The reversal of 166100593 is 395001661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 395001661 = 5059 ⋅78079.

It can be written as a sum of positive squares in 2 ways, for example, as 121705024 + 44395569 = 11032^2 + 6663^2 .

It is a cyclic number.

It is not a de Polignac number, because 166100593 - 2¹³ = 166092401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166100563) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 4533 + ... + 18781.

It is an arithmetic number, because the mean of its divisors is an integer number (41531625).

Almost surely, 2^166100593 is an apocalyptic number.

It is an amenable number.

166100593 is a deficient number, since it is larger than the sum of its proper divisors (25907).

166100593 is a wasteful number, since it uses less digits than its factorization.

166100593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25906.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 166100593 is about 12888.0019009930. The cubic root of 166100593 is about 549.6974567484.

The spelling of 166100593 in words is "one hundred sixty-six million, one hundred thousand, five hundred ninety-three".