166361113 has 2 divisors, whose sum is σ = 166361114. Its totient is φ = 166361112.

The previous prime is 166361077. The next prime is 166361161. The reversal of 166361113 is 311163661.

It is a happy number.

166361113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 101767744 + 64593369 = 10088^2 + 8037^2 .

It is a cyclic number.

It is not a de Polignac number, because 166361113 - 2¹⁷ = 166230041 is a prime.

It is not a weakly prime, because it can be changed into another prime (166362113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83180556 + 83180557.

It is an arithmetic number, because the mean of its divisors is an integer number (83180557).

Almost surely, 2^166361113 is an apocalyptic number.

It is an amenable number.

166361113 is a deficient number, since it is larger than the sum of its proper divisors (1).

166361113 is an equidigital number, since it uses as much as digits as its factorization.

166361113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 28.

The square root of 166361113 is about 12898.1050158541. The cubic root of 166361113 is about 549.9846970949.

The spelling of 166361113 in words is "one hundred sixty-six million, three hundred sixty-one thousand, one hundred thirteen".