166158413 has 2 divisors, whose sum is σ = 166158414. Its totient is φ = 166158412.

The previous prime is 166158383. The next prime is 166158431. The reversal of 166158413 is 314851661.

166158413 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (166158431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163379524 + 2778889 = 12782^2 + 1667^2 .

It is a cyclic number.

It is not a de Polignac number, because 166158413 - 2¹⁴ = 166142029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166148413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83079206 + 83079207.

It is an arithmetic number, because the mean of its divisors is an integer number (83079207).

Almost surely, 2^166158413 is an apocalyptic number.

It is an amenable number.

166158413 is a deficient number, since it is larger than the sum of its proper divisors (1).

166158413 is an equidigital number, since it uses as much as digits as its factorization.

166158413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 35.

The square root of 166158413 is about 12890.2448774257. The cubic root of 166158413 is about 549.7612330002.

The spelling of 166158413 in words is "one hundred sixty-six million, one hundred fifty-eight thousand, four hundred thirteen".