18677422 has 4 divisors (see below), whose sum is σ = 28016136. Its totient is φ = 9338710.

The previous prime is 18677413. The next prime is 18677423. The reversal of 18677422 is 22477681.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18677423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4669354 + ... + 4669357.

It is an arithmetic number, because the mean of its divisors is an integer number (7004034).

Almost surely, 2^18677422 is an apocalyptic number.

18677422 is a deficient number, since it is larger than the sum of its proper divisors (9338714).

18677422 is an equidigital number, since it uses as much as digits as its factorization.

18677422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338713.

The product of its digits is 37632, while the sum is 37.

The square root of 18677422 is about 4321.7383076720. The cubic root of 18677422 is about 265.3214184667.

The spelling of 18677422 in words is "eighteen million, six hundred seventy-seven thousand, four hundred twenty-two".