1816648 has 8 divisors (see below), whose sum is σ = 3406230. Its totient is φ = 908320.

The previous prime is 1816643. The next prime is 1816651. The reversal of 1816648 is 8466181.

It can be written as a sum of positive squares in only one way, i.e., 1737124 + 79524 = 1318^2 + 282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1816643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113533 + ... + 113548.

2^1816648 is an apocalyptic number.

It is an amenable number.

1816648 is a deficient number, since it is larger than the sum of its proper divisors (1589582).

1816648 is a wasteful number, since it uses less digits than its factorization.

1816648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227087 (or 227083 counting only the distinct ones).

The product of its digits is 9216, while the sum is 34.

The square root of 1816648 is about 1347.8308499215. The cubic root of 1816648 is about 122.0179137003.

The spelling of 1816648 in words is "one million, eight hundred sixteen thousand, six hundred forty-eight".