813573813098 has 4 divisors (see below), whose sum is σ = 1220360719650. Its totient is φ = 406786906548.

The previous prime is 813573813083. The next prime is 813573813103. The reversal of 813573813098 is 890318375318.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 763059902089 + 50513911009 = 873533^2 + 224753^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203393453273 + ... + 203393453276.

Almost surely, 2^813573813098 is an apocalyptic number.

813573813098 is a deficient number, since it is larger than the sum of its proper divisors (406786906552).

813573813098 is a wasteful number, since it uses less digits than its factorization.

813573813098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406786906551.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 813573813098 in words is "eight hundred thirteen billion, five hundred seventy-three million, eight hundred thirteen thousand, ninety-eight".