1881005855793 has 4 divisors (see below), whose sum is σ = 2508007807728. Its totient is φ = 1254003903860.

The previous prime is 1881005855731. The next prime is 1881005855801. The reversal of 1881005855793 is 3975585001881.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1881005855793 - 2¹⁷ = 1881005724721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1881005855713) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 313500975963 + ... + 313500975968.

It is an arithmetic number, because the mean of its divisors is an integer number (627001951932).

Almost surely, 2^{1881005855793} is an apocalyptic number.

It is an amenable number.

1881005855793 is a deficient number, since it is larger than the sum of its proper divisors (627001951935).

1881005855793 is an equidigital number, since it uses as much as digits as its factorization.

1881005855793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 627001951934.

The product of its (nonzero) digits is 12096000, while the sum is 60.

The spelling of 1881005855793 in words is "one trillion, eight hundred eighty-one billion, five million, eight hundred fifty-five thousand, seven hundred ninety-three".