166563093 has 32 divisors (see below), whose sum is σ = 244823040. Its totient is φ = 100270080.

The previous prime is 166563091. The next prime is 166563109. The reversal of 166563093 is 390365661.

It is not a de Polignac number, because 166563093 - 2¹ = 166563091 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166563091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 216213 + ... + 216981.

It is an arithmetic number, because the mean of its divisors is an integer number (7650720).

Almost surely, 2^166563093 is an apocalyptic number.

It is an amenable number.

166563093 is a deficient number, since it is larger than the sum of its proper divisors (78259947).

166563093 is a wasteful number, since it uses less digits than its factorization.

166563093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 957.

The product of its (nonzero) digits is 87480, while the sum is 39.

The square root of 166563093 is about 12905.9324730916. The cubic root of 166563093 is about 550.2071869559.

The spelling of 166563093 in words is "one hundred sixty-six million, five hundred sixty-three thousand, ninety-three".