166596349 has 2 divisors, whose sum is σ = 166596350. Its totient is φ = 166596348.

The previous prime is 166596343. The next prime is 166596359. The reversal of 166596349 is 943695661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164301124 + 2295225 = 12818^2 + 1515^2 .

It is an emirp because it is prime and its reverse (943695661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166596349 - 2¹³ = 166588157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166596343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83298174 + 83298175.

It is an arithmetic number, because the mean of its divisors is an integer number (83298175).

Almost surely, 2^166596349 is an apocalyptic number.

It is an amenable number.

166596349 is a deficient number, since it is larger than the sum of its proper divisors (1).

166596349 is an equidigital number, since it uses as much as digits as its factorization.

166596349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 49.

The square root of 166596349 is about 12907.2208085242. The cubic root of 166596349 is about 550.2438026556.

The spelling of 166596349 in words is "one hundred sixty-six million, five hundred ninety-six thousand, three hundred forty-nine".