1812648 has 16 divisors (see below), whose sum is σ = 4531680. Its totient is φ = 604208.

The previous prime is 1812623. The next prime is 1812661. The reversal of 1812648 is 8462181.

It is a nude number because it is divisible by every one of its digits.

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, 37740 + ... + 37787.

It is an arithmetic number, because the mean of its divisors is an integer number (283230).

2^1812648 is an apocalyptic number.

It is an amenable number.

1812648 is an abundant number, since it is smaller than the sum of its proper divisors (2719032).

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

1812648 is a wasteful number, since it uses less digits than its factorization.

1812648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75536 (or 75532 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

The square root of 1812648 is about 1346.3461664817. The cubic root of 1812648 is about 121.9282925381.

The spelling of 1812648 in words is "one million, eight hundred twelve thousand, six hundred forty-eight".