18628466 has 4 divisors (see below), whose sum is σ = 27942702. Its totient is φ = 9314232.

The previous prime is 18628451. The next prime is 18628499. The reversal of 18628466 is 66482681.

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

It can be written as a sum of positive squares in only one way, i.e., 14938225 + 3690241 = 3865^2 + 1921^2 .

It is a super-3 number, since 3×18628466³ (a number of 23 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4657115 + ... + 4657118.

Almost surely, 2^18628466 is an apocalyptic number.

18628466 is a deficient number, since it is larger than the sum of its proper divisors (9314236).

18628466 is an equidigital number, since it uses as much as digits as its factorization.

18628466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9314235.

The product of its digits is 110592, while the sum is 41.

The square root of 18628466 is about 4316.0706667060. The cubic root of 18628466 is about 265.0894014247.

The spelling of 18628466 in words is "eighteen million, six hundred twenty-eight thousand, four hundred sixty-six".