381354688873 has 2 divisors, whose sum is σ = 381354688874. Its totient is φ = 381354688872.

The previous prime is 381354688853. The next prime is 381354688877. The reversal of 381354688873 is 378886453183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 380995093504 + 359595369 = 617248^2 + 18963^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381354688873 is a prime.

It is not a weakly prime, because it can be changed into another prime (381354688877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190677344436 + 190677344437.

It is an arithmetic number, because the mean of its divisors is an integer number (190677344437).

Almost surely, 2^381354688873 is an apocalyptic number.

It is an amenable number.

381354688873 is a deficient number, since it is larger than the sum of its proper divisors (1).

381354688873 is an equidigital number, since it uses as much as digits as its factorization.

381354688873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 92897280, while the sum is 64.

The spelling of 381354688873 in words is "three hundred eighty-one billion, three hundred fifty-four million, six hundred eighty-eight thousand, eight hundred seventy-three".