18340466 has 4 divisors (see below), whose sum is σ = 27510702. Its totient is φ = 9170232.

The previous prime is 18340463. The next prime is 18340523. The reversal of 18340466 is 66404381.

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., 18309841 + 30625 = 4279^2 + 175^2 .

It is not an unprimeable number, because it can be changed into a prime (18340463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4585115 + ... + 4585118.

Almost surely, 2^18340466 is an apocalyptic number.

18340466 is a deficient number, since it is larger than the sum of its proper divisors (9170236).

18340466 is an equidigital number, since it uses as much as digits as its factorization.

18340466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9170235.

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 18340466 is about 4282.5770279120. The cubic root of 18340466 is about 263.7161875749.

The spelling of 18340466 in words is "eighteen million, three hundred forty thousand, four hundred sixty-six".