1819212 has 48 divisors (see below), whose sum is σ = 4569600. Its totient is φ = 561600.

The previous prime is 1819189. The next prime is 1819217. The reversal of 1819212 is 2129181.

It is not an unprimeable number, because it can be changed into a prime (1819217) 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, 17962 + ... + 18062.

It is an arithmetic number, because the mean of its divisors is an integer number (95200).

2^1819212 is an apocalyptic number.

1819212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1819212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2284800).

1819212 is an abundant number, since it is smaller than the sum of its proper divisors (2750388).

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

1819212 is a wasteful number, since it uses less digits than its factorization.

1819212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206 (or 204 counting only the distinct ones).

The product of its digits is 288, while the sum is 24.

The square root of 1819212 is about 1348.7816724733. The cubic root of 1819212 is about 122.0752916953.

The spelling of 1819212 in words is "one million, eight hundred nineteen thousand, two hundred twelve".