1818342 has 32 divisors (see below), whose sum is σ = 4085760. Its totient is φ = 599400.

The previous prime is 1818331. The next prime is 1818347. The reversal of 1818342 is 2438181.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1818347) 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, 8043 + ... + 8265.

It is an arithmetic number, because the mean of its divisors is an integer number (127680).

2^1818342 is an apocalyptic number.

1818342 is an abundant number, since it is smaller than the sum of its proper divisors (2267418).

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

1818342 is a wasteful number, since it uses less digits than its factorization.

1818342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385 (or 379 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 1818342 is about 1348.4591206262. The cubic root of 1818342 is about 122.0558286094.

It can be divided in two parts, 18183 and 42, that added together give a square (18225 = 135²).

The spelling of 1818342 in words is "one million, eight hundred eighteen thousand, three hundred forty-two".