12538166 has 4 divisors (see below), whose sum is σ = 18807252. Its totient is φ = 6269082.

The previous prime is 12538159. The next prime is 12538171. The reversal of 12538166 is 66183521.

It is a happy number.

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, 3134540 + ... + 3134543.

It is an arithmetic number, because the mean of its divisors is an integer number (4701813).

Almost surely, 2^12538166 is an apocalyptic number.

12538166 is a deficient number, since it is larger than the sum of its proper divisors (6269086).

12538166 is an equidigital number, since it uses as much as digits as its factorization.

12538166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6269085.

The product of its digits is 8640, while the sum is 32.

The square root of 12538166 is about 3540.9272796825. The cubic root of 12538166 is about 232.3154028640.

The spelling of 12538166 in words is "twelve million, five hundred thirty-eight thousand, one hundred sixty-six".