1855153489823 has 2 divisors, whose sum is σ = 1855153489824. Its totient is φ = 1855153489822.

The previous prime is 1855153489801. The next prime is 1855153489829. The reversal of 1855153489823 is 3289843515581.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1855153489823 - 2¹⁶ = 1855153424287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855153489829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 927576744911 + 927576744912.

It is an arithmetic number, because the mean of its divisors is an integer number (927576744912).

Almost surely, 2^{1855153489823} is an apocalyptic number.

1855153489823 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855153489823 is an equidigital number, since it uses as much as digits as its factorization.

1855153489823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472000, while the sum is 62.

The spelling of 1855153489823 in words is "one trillion, eight hundred fifty-five billion, one hundred fifty-three million, four hundred eighty-nine thousand, eight hundred twenty-three".