18866134 has 16 divisors (see below), whose sum is σ = 32398848. Its totient is φ = 8071272.

The previous prime is 18866123. The next prime is 18866161. The reversal of 18866134 is 43166881.

It is a junction number, because it is equal to n+sod(n) for n = 18866093 and 18866102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12547 + ... + 13969.

It is an arithmetic number, because the mean of its divisors is an integer number (2024928).

Almost surely, 2^18866134 is an apocalyptic number.

18866134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18866134 is a deficient number, since it is larger than the sum of its proper divisors (13532714).

18866134 is a wasteful number, since it uses less digits than its factorization.

18866134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2379.

The product of its digits is 27648, while the sum is 37.

The square root of 18866134 is about 4343.5163174552. The cubic root of 18866134 is about 266.2120061577.

The spelling of 18866134 in words is "eighteen million, eight hundred sixty-six thousand, one hundred thirty-four".