1818456 has 32 divisors (see below), whose sum is σ = 4814640. Its totient is φ = 570368.

The previous prime is 1818451. The next prime is 1818457. The reversal of 1818456 is 6548181.

It is a hoax number, since the sum of its digits (33) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818451) 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, 1821 + ... + 2636.

2^1818456 is an apocalyptic number.

It is an amenable number.

1818456 is an abundant number, since it is smaller than the sum of its proper divisors (2996184).

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

1818456 is a wasteful number, since it uses less digits than its factorization.

1818456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4483 (or 4479 counting only the distinct ones).

The product of its digits is 7680, while the sum is 33.

The square root of 1818456 is about 1348.5013904331. The cubic root of 1818456 is about 122.0583792981.

The spelling of 1818456 in words is "one million, eight hundred eighteen thousand, four hundred fifty-six".