1798199030898 has 24 divisors (see below), whose sum is σ = 3896896962348. Its totient is φ = 599276744352.

The previous prime is 1798199030893. The next prime is 1798199030899. The reversal of 1798199030898 is 8980309918971.

1798199030898 is a `hidden beast` number, since 1 + 79 + 81 + 9 + 90 + 308 + 98 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1798112037969 + 86992929 = 1340937^2 + 9327^2 .

It is not an unprimeable number, because it can be changed into a prime (1798199030893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10154161 + ... + 10329732.

Almost surely, 2^{1798199030898} is an apocalyptic number.

1798199030898 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1798199030898 is an abundant number, since it is smaller than the sum of its proper divisors (2098697931450).

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

1798199030898 is a wasteful number, since it uses less digits than its factorization.

1798199030898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20488778 (or 20488775 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 72.

The spelling of 1798199030898 in words is "one trillion, seven hundred ninety-eight billion, one hundred ninety-nine million, thirty thousand, eight hundred ninety-eight".