381809889229 has 2 divisors, whose sum is σ = 381809889230. Its totient is φ = 381809889228.

The previous prime is 381809889203. The next prime is 381809889277. The reversal of 381809889229 is 922988908183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 377548802500 + 4261086729 = 614450^2 + 65277^2 .

It is a cyclic number.

It is not a de Polignac number, because 381809889229 - 2⁹ = 381809888717 is a prime.

It is a super-2 number, since 2×381809889229² (a number of 24 digits) contains 22 as substring.

It is a zygodrome in base 3.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381809889299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190904944614 + 190904944615.

It is an arithmetic number, because the mean of its divisors is an integer number (190904944615).

Almost surely, 2^381809889229 is an apocalyptic number.

It is an amenable number.

381809889229 is a deficient number, since it is larger than the sum of its proper divisors (1).

381809889229 is an equidigital number, since it uses as much as digits as its factorization.

381809889229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35831808, while the sum is 67.

The spelling of 381809889229 in words is "three hundred eighty-one billion, eight hundred nine million, eight hundred eighty-nine thousand, two hundred twenty-nine".