1805598042 has 16 divisors (see below), whose sum is σ = 3611835552. Its totient is φ = 601759440.

The previous prime is 1805598023. The next prime is 1805598121. The reversal of 1805598042 is 2408955081.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1805597985 and 1805598003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15093 + ... + 61959.

It is an arithmetic number, because the mean of its divisors is an integer number (225739722).

Almost surely, 2^1805598042 is an apocalyptic number.

1805598042 is an abundant number, since it is smaller than the sum of its proper divisors (1806237510).

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

1805598042 is a wasteful number, since it uses less digits than its factorization.

1805598042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53293.

The product of its (nonzero) digits is 115200, while the sum is 42.

The square root of 1805598042 is about 42492.3292136357. The cubic root of 1805598042 is about 1217.7001467426.

The spelling of 1805598042 in words is "one billion, eight hundred five million, five hundred ninety-eight thousand, forty-two".