1803642 has 16 divisors (see below), whose sum is σ = 3724032. Its totient is φ = 581760.

The previous prime is 1803629. The next prime is 1803647. The reversal of 1803642 is 2463081.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1803647) 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, 4663 + ... + 5034.

It is an arithmetic number, because the mean of its divisors is an integer number (232752).

2^1803642 is an apocalyptic number.

1803642 is an abundant number, since it is smaller than the sum of its proper divisors (1920390).

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

1803642 is a wasteful number, since it uses less digits than its factorization.

1803642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9733.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 1803642 is about 1342.9973938917. The cubic root of 1803642 is about 121.7260267876.

The spelling of 1803642 in words is "one million, eight hundred three thousand, six hundred forty-two".