813984997498 has 16 divisors (see below), whose sum is σ = 1259062122240. Its totient is φ = 394465767696.

The previous prime is 813984997417. The next prime is 813984997517. The reversal of 813984997498 is 894799489318.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 42026313 + ... + 42045676.

It is an arithmetic number, because the mean of its divisors is an integer number (78691382640).

Almost surely, 2^813984997498 is an apocalyptic number.

813984997498 is a deficient number, since it is larger than the sum of its proper divisors (445077124742).

813984997498 is a wasteful number, since it uses less digits than its factorization.

813984997498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84072141.

The product of its digits is 1128701952, while the sum is 79.

The spelling of 813984997498 in words is "eight hundred thirteen billion, nine hundred eighty-four million, nine hundred ninety-seven thousand, four hundred ninety-eight".