381354688853 has 2 divisors, whose sum is σ = 381354688854. Its totient is φ = 381354688852.

The previous prime is 381354688843. The next prime is 381354688873. The reversal of 381354688853 is 358886453183.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 193465383409 + 187889305444 = 439847^2 + 433462^2 .

It is a cyclic number.

It is not a de Polignac number, because 381354688853 - 2²⁰ = 381353640277 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 (381354688823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190677344426 + 190677344427.

It is an arithmetic number, because the mean of its divisors is an integer number (190677344427).

Almost surely, 2^381354688853 is an apocalyptic number.

It is an amenable number.

381354688853 is a deficient number, since it is larger than the sum of its proper divisors (1).

381354688853 is an equidigital number, since it uses as much as digits as its factorization.

381354688853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66355200, while the sum is 62.

The spelling of 381354688853 in words is "three hundred eighty-one billion, three hundred fifty-four million, six hundred eighty-eight thousand, eight hundred fifty-three".