16516166 has 4 divisors (see below), whose sum is σ = 24774252. Its totient is φ = 8258082.

The previous prime is 16516127. The next prime is 16516183. The reversal of 16516166 is 66161561.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4129040 + ... + 4129043.

It is an arithmetic number, because the mean of its divisors is an integer number (6193563).

Almost surely, 2^16516166 is an apocalyptic number.

16516166 is a deficient number, since it is larger than the sum of its proper divisors (8258086).

16516166 is an equidigital number, since it uses as much as digits as its factorization.

16516166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8258085.

The product of its digits is 6480, while the sum is 32.

The square root of 16516166 is about 4064.0086121956. The cubic root of 16516166 is about 254.6652842805.

The spelling of 16516166 in words is "sixteen million, five hundred sixteen thousand, one hundred sixty-six".