1855093673501 has 2 divisors, whose sum is σ = 1855093673502. Its totient is φ = 1855093673500.

The previous prime is 1855093673327. The next prime is 1855093673507. The reversal of 1855093673501 is 1053763905581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1846062972601 + 9030700900 = 1358699^2 + 95030^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1855093673501 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1855093673507) 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 as a sum of consecutive naturals, namely, 927546836750 + 927546836751.

It is an arithmetic number, because the mean of its divisors is an integer number (927546836751).

Almost surely, 2^{1855093673501} is an apocalyptic number.

It is an amenable number.

1855093673501 is a deficient number, since it is larger than the sum of its proper divisors (1).

1855093673501 is an equidigital number, since it uses as much as digits as its factorization.

1855093673501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402000, while the sum is 53.

The spelling of 1855093673501 in words is "one trillion, eight hundred fifty-five billion, ninety-three million, six hundred seventy-three thousand, five hundred one".