1819442 has 16 divisors (see below), whose sum is σ = 2941920. Its totient is φ = 840768.

The previous prime is 1819423. The next prime is 1819471. The reversal of 1819442 is 2449181.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1553 + ... + 2459.

It is an arithmetic number, because the mean of its divisors is an integer number (183870).

2^1819442 is an apocalyptic number.

1819442 is a deficient number, since it is larger than the sum of its proper divisors (1122478).

1819442 is a wasteful number, since it uses less digits than its factorization.

1819442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985.

The product of its digits is 2304, while the sum is 29.

The square root of 1819442 is about 1348.8669319099. The cubic root of 1819442 is about 122.0804360717.

The spelling of 1819442 in words is "one million, eight hundred nineteen thousand, four hundred forty-two".