166513063 has 2 divisors, whose sum is σ = 166513064. Its totient is φ = 166513062.

The previous prime is 166513049. The next prime is 166513111. The reversal of 166513063 is 360315661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166513063 - 2⁹ = 166512551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166513003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83256531 + 83256532.

It is an arithmetic number, because the mean of its divisors is an integer number (83256532).

Almost surely, 2^166513063 is an apocalyptic number.

166513063 is a deficient number, since it is larger than the sum of its proper divisors (1).

166513063 is an equidigital number, since it uses as much as digits as its factorization.

166513063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9720, while the sum is 31.

The square root of 166513063 is about 12903.9940716043. The cubic root of 166513063 is about 550.1520934744.

The spelling of 166513063 in words is "one hundred sixty-six million, five hundred thirteen thousand, sixty-three".