1855183594093 has 2 divisors, whose sum is σ = 1855183594094. Its totient is φ = 1855183594092.

The previous prime is 1855183594091. The next prime is 1855183594169. The reversal of 1855183594093 is 3904953815581.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1850911272324 + 4272321769 = 1360482^2 + 65363^2 .

It is a cyclic number.

It is not a de Polignac number, because 1855183594093 - 2¹ = 1855183594091 is a prime.

Together with 1855183594091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855183594091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927591797046 + 927591797047.

It is an arithmetic number, because the mean of its divisors is an integer number (927591797047).

Almost surely, 2^{1855183594093} is an apocalyptic number.

It is an amenable number.

1855183594093 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855183594093 is an equidigital number, since it uses as much as digits as its factorization.

1855183594093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328000, while the sum is 61.

The spelling of 1855183594093 in words is "one trillion, eight hundred fifty-five billion, one hundred eighty-three million, five hundred ninety-four thousand, ninety-three".