381009242347819 has 2 divisors, whose sum is σ = 381009242347820. Its totient is φ = 381009242347818.

The previous prime is 381009242347771. The next prime is 381009242347841. The reversal of 381009242347819 is 918743242900183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381009242347819 - 2¹⁹ = 381009241823531 is a prime.

It is a super-2 number, since 2×381009242347819² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (381009242347519) 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, 190504621173909 + 190504621173910.

It is an arithmetic number, because the mean of its divisors is an integer number (190504621173910).

Almost surely, 2^{381009242347819} is an apocalyptic number.

381009242347819 is a deficient number, since it is larger than the sum of its proper divisors (1).

381009242347819 is an equidigital number, since it uses as much as digits as its factorization.

381009242347819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 381009242347819 in words is "three hundred eighty-one trillion, nine billion, two hundred forty-two million, three hundred forty-seven thousand, eight hundred nineteen".