1081836465893 has 4 divisors (see below), whose sum is σ = 1081911353100. Its totient is φ = 1081761578688.

The previous prime is 1081836465847. The next prime is 1081836465917. The reversal of 1081836465893 is 3985646381801.

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

It can be written as a sum of positive squares in 2 ways, for example, as 505758501889 + 576077964004 = 711167^2 + 758998^2 .

It is a cyclic number.

It is not a de Polignac number, because 1081836465893 - 2⁸ = 1081836465637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081836465833) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37421930 + ... + 37450827.

It is an arithmetic number, because the mean of its divisors is an integer number (270477838275).

Almost surely, 2^{1081836465893} is an apocalyptic number.

It is an amenable number.

1081836465893 is a deficient number, since it is larger than the sum of its proper divisors (74887207).

1081836465893 is an equidigital number, since it uses as much as digits as its factorization.

1081836465893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74887206.

The product of its (nonzero) digits is 29859840, while the sum is 62.

The spelling of 1081836465893 in words is "one trillion, eighty-one billion, eight hundred thirty-six million, four hundred sixty-five thousand, eight hundred ninety-three".