381070707205 has 4 divisors (see below), whose sum is σ = 457284848652. Its totient is φ = 304856565760.

The previous prime is 381070707113. The next prime is 381070707257. The reversal of 381070707205 is 502707070183.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 164095477569 + 216975229636 = 405087^2 + 465806^2 .

It is not a de Polignac number, because 381070707205 - 2¹⁹ = 381070182917 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38107070716 + ... + 38107070725.

It is an arithmetic number, because the mean of its divisors is an integer number (114321212163).

Almost surely, 2^381070707205 is an apocalyptic number.

It is an amenable number.

381070707205 is a deficient number, since it is larger than the sum of its proper divisors (76214141447).

381070707205 is an equidigital number, since it uses as much as digits as its factorization.

381070707205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76214141446.

The product of its (nonzero) digits is 82320, while the sum is 40.

Adding to 381070707205 its reverse (502707070183), we get a palindrome (883777777388).

The spelling of 381070707205 in words is "three hundred eighty-one billion, seventy million, seven hundred seven thousand, two hundred five".