18946212 has 12 divisors (see below), whose sum is σ = 44207856. Its totient is φ = 6315400.

The previous prime is 18946171. The next prime is 18946237. The reversal of 18946212 is 21264981.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789414 + ... + 789437.

It is an arithmetic number, because the mean of its divisors is an integer number (3683988).

Almost surely, 2^18946212 is an apocalyptic number.

18946212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18946212 is an abundant number, since it is smaller than the sum of its proper divisors (25261644).

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

18946212 is a wasteful number, since it uses less digits than its factorization.

18946212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1578858 (or 1578856 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 18946212 is about 4352.7246639318. The cubic root of 18946212 is about 266.5881233961.

The spelling of 18946212 in words is "eighteen million, nine hundred forty-six thousand, two hundred twelve".