1813542 has 32 divisors (see below), whose sum is σ = 3801600. Its totient is φ = 576288.

The previous prime is 1813523. The next prime is 1813547. The reversal of 1813542 is 2453181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1813547) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 16584 + ... + 16692.

It is an arithmetic number, because the mean of its divisors is an integer number (118800).

2^1813542 is an apocalyptic number.

1813542 is an abundant number, since it is smaller than the sum of its proper divisors (1988058).

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

1813542 is a wasteful number, since it uses less digits than its factorization.

1813542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220.

The product of its digits is 960, while the sum is 24.

The square root of 1813542 is about 1346.6781352647. The cubic root of 1813542 is about 121.9483342999.

The spelling of 1813542 in words is "one million, eight hundred thirteen thousand, five hundred forty-two".