1093814872781 has 2 divisors, whose sum is σ = 1093814872782. Its totient is φ = 1093814872780.

The previous prime is 1093814872741. The next prime is 1093814872807. The reversal of 1093814872781 is 1872784183901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 856198596100 + 237616276681 = 925310^2 + 487459^2 .

It is a cyclic number.

It is not a de Polignac number, because 1093814872781 - 2¹⁰ = 1093814871757 is a prime.

It is a super-2 number, since 2×1093814872781² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1093814872781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1093814872721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546907436390 + 546907436391.

It is an arithmetic number, because the mean of its divisors is an integer number (546907436391).

Almost surely, 2^{1093814872781} is an apocalyptic number.

It is an amenable number.

1093814872781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093814872781 is an equidigital number, since it uses as much as digits as its factorization.

1093814872781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5419008, while the sum is 59.

The spelling of 1093814872781 in words is "one trillion, ninety-three billion, eight hundred fourteen million, eight hundred seventy-two thousand, seven hundred eighty-one".