810491985098 has 16 divisors (see below), whose sum is σ = 1219845302016. Its totient is φ = 403879014000.

The previous prime is 810491985097. The next prime is 810491985101. The reversal of 810491985098 is 890589194018.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 810491985098.

It is not an unprimeable number, because it can be changed into a prime (810491985097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 230348 + ... + 1293848.

It is an arithmetic number, because the mean of its divisors is an integer number (76240331376).

Almost surely, 2^810491985098 is an apocalyptic number.

810491985098 is a deficient number, since it is larger than the sum of its proper divisors (409353316918).

810491985098 is a wasteful number, since it uses less digits than its factorization.

810491985098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1064789.

The product of its (nonzero) digits is 7464960, while the sum is 62.

The spelling of 810491985098 in words is "eight hundred ten billion, four hundred ninety-one million, nine hundred eighty-five thousand, ninety-eight".