381442795897 has 2 divisors, whose sum is σ = 381442795898. Its totient is φ = 381442795896.

The previous prime is 381442795873. The next prime is 381442795931. The reversal of 381442795897 is 798597244183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 256396398736 + 125046397161 = 506356^2 + 353619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381442795897 is a prime.

It is not a weakly prime, because it can be changed into another prime (381442795817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190721397948 + 190721397949.

It is an arithmetic number, because the mean of its divisors is an integer number (190721397949).

Almost surely, 2^381442795897 is an apocalyptic number.

It is an amenable number.

381442795897 is a deficient number, since it is larger than the sum of its proper divisors (1).

381442795897 is an equidigital number, since it uses as much as digits as its factorization.

381442795897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 121927680, while the sum is 67.

The spelling of 381442795897 in words is "three hundred eighty-one billion, four hundred forty-two million, seven hundred ninety-five thousand, eight hundred ninety-seven".