798818781 has 16 divisors (see below), whose sum is σ = 1075128320. Its totient is φ = 527551920.

The previous prime is 798818749. The next prime is 798818791. The reversal of 798818781 is 187818897.

It is not a de Polignac number, because 798818781 - 2⁵ = 798818749 is a prime.

It is a super-2 number, since 2×798818781² = 1276222889756651922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798818711) 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, 138330 + ... + 143988.

It is an arithmetic number, because the mean of its divisors is an integer number (67195520).

Almost surely, 2^798818781 is an apocalyptic number.

It is an amenable number.

798818781 is a deficient number, since it is larger than the sum of its proper divisors (276309539).

798818781 is a wasteful number, since it uses less digits than its factorization.

798818781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6096.

The product of its digits is 1806336, while the sum is 57.

The square root of 798818781 is about 28263.3823347454. The cubic root of 798818781 is about 927.8606472561.

The spelling of 798818781 in words is "seven hundred ninety-eight million, eight hundred eighteen thousand, seven hundred eighty-one".