381199851667 has 2 divisors, whose sum is σ = 381199851668. Its totient is φ = 381199851666.

The previous prime is 381199851631. The next prime is 381199851671. The reversal of 381199851667 is 766158991183.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381199851667 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381199851599 and 381199851608.

It is not a weakly prime, because it can be changed into another prime (381199851607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190599925833 + 190599925834.

It is an arithmetic number, because the mean of its divisors is an integer number (190599925834).

Almost surely, 2^381199851667 is an apocalyptic number.

381199851667 is a deficient number, since it is larger than the sum of its proper divisors (1).

381199851667 is an equidigital number, since it uses as much as digits as its factorization.

381199851667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19595520, while the sum is 64.

The spelling of 381199851667 in words is "three hundred eighty-one billion, one hundred ninety-nine million, eight hundred fifty-one thousand, six hundred sixty-seven".