18671466 has 32 divisors (see below), whose sum is σ = 41155776. Its totient is φ = 5600000.

The previous prime is 18671461. The next prime is 18671473. The reversal of 18671466 is 66417681.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18671461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5266 + ... + 8066.

It is an arithmetic number, because the mean of its divisors is an integer number (1286118).

Almost surely, 2^18671466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18671466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20577888).

18671466 is an abundant number, since it is smaller than the sum of its proper divisors (22484310).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18671466 is a wasteful number, since it uses less digits than its factorization.

18671466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2918.

The product of its digits is 48384, while the sum is 39.

The square root of 18671466 is about 4321.0491781511. The cubic root of 18671466 is about 265.2932128901.

It can be divided in two parts, 1867 and 1466, that added together give a palindrome (3333).

The spelling of 18671466 in words is "eighteen million, six hundred seventy-one thousand, four hundred sixty-six".