1812668 has 24 divisors (see below), whose sum is σ = 3727920. Its totient is φ = 760320.

The previous prime is 1812661. The next prime is 1812673. The reversal of 1812668 is 8662181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1812661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1013 + ... + 2156.

It is an arithmetic number, because the mean of its divisors is an integer number (155330).

2^1812668 is an apocalyptic number.

It is an amenable number.

1812668 is an abundant number, since it is smaller than the sum of its proper divisors (1915252).

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

1812668 is a wasteful number, since it uses less digits than its factorization.

1812668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197 (or 3195 counting only the distinct ones).

The product of its digits is 4608, while the sum is 32.

The square root of 1812668 is about 1346.3535939715. The cubic root of 1812668 is about 121.9287409717.

The spelling of 1812668 in words is "one million, eight hundred twelve thousand, six hundred sixty-eight".