813338934237 has 16 divisors (see below), whose sum is σ = 1221917650560. Its totient is φ = 534588969600.

The previous prime is 813338934227. The next prime is 813338934269. The reversal of 813338934237 is 732439833318.

813338934237 is a `hidden beast` number, since 8 + 133 + 3 + 89 + 3 + 423 + 7 = 666.

It is not a de Polignac number, because 813338934237 - 2²² = 813334739933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813338934227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212136564 + ... + 212140397.

It is an arithmetic number, because the mean of its divisors is an integer number (76369853160).

Almost surely, 2^813338934237 is an apocalyptic number.

It is an amenable number.

813338934237 is a deficient number, since it is larger than the sum of its proper divisors (408578716323).

813338934237 is a wasteful number, since it uses less digits than its factorization.

813338934237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424277041 (or 424277035 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 813338934237 in words is "eight hundred thirteen billion, three hundred thirty-eight million, nine hundred thirty-four thousand, two hundred thirty-seven".