1031820063894 has 32 divisors (see below), whose sum is σ = 2293910720640. Its totient is φ = 343793434536.

The previous prime is 1031820063871. The next prime is 1031820063941. The reversal of 1031820063894 is 4983600281301.

1031820063894 is a `hidden beast` number, since 1 + 0 + 3 + 1 + 8 + 2 + 0 + 0 + 638 + 9 + 4 = 666.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 3943944 + ... + 4197419.

It is an arithmetic number, because the mean of its divisors is an integer number (71684710020).

Almost surely, 2^{1031820063894} is an apocalyptic number.

1031820063894 is an abundant number, since it is smaller than the sum of its proper divisors (1262090656746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1031820063894 is a wasteful number, since it uses less digits than its factorization.

1031820063894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8143721 (or 8143715 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 1031820063894 in words is "one trillion, thirty-one billion, eight hundred twenty million, sixty-three thousand, eight hundred ninety-four".