166108499 has 4 divisors (see below), whose sum is σ = 166547160. Its totient is φ = 165669840.

The previous prime is 166108493. The next prime is 166108511. The reversal of 166108499 is 994801661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 166108499 - 2⁴ = 166108483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166108493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218762 + ... + 219519.

It is an arithmetic number, because the mean of its divisors is an integer number (41636790).

Almost surely, 2^166108499 is an apocalyptic number.

166108499 is a deficient number, since it is larger than the sum of its proper divisors (438661).

166108499 is an equidigital number, since it uses as much as digits as its factorization.

166108499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438660.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 166108499 is about 12888.3086167270. The cubic root of 166108499 is about 549.7061780481.

The spelling of 166108499 in words is "one hundred sixty-six million, one hundred eight thousand, four hundred ninety-nine".