1798198842 has 32 divisors (see below), whose sum is σ = 3954253824. Its totient is φ = 540615600.

The previous prime is 1798198841. The next prime is 1798198907. The reversal of 1798198842 is 2488918971.

It is not an unprimeable number, because it can be changed into a prime (1798198841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98884 + ... + 115647.

It is an arithmetic number, because the mean of its divisors is an integer number (123570432).

Almost surely, 2^1798198842 is an apocalyptic number.

1798198842 is an abundant number, since it is smaller than the sum of its proper divisors (2156054982).

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

1798198842 is a wasteful number, since it uses less digits than its factorization.

1798198842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214674.

The product of its digits is 2322432, while the sum is 57.

The square root of 1798198842 is about 42405.1747078113. The cubic root of 1798198842 is about 1216.0345227135.

The spelling of 1798198842 in words is "one billion, seven hundred ninety-eight million, one hundred ninety-eight thousand, eight hundred forty-two".