1381766338229 has 4 divisors (see below), whose sum is σ = 1463046711084. Its totient is φ = 1300485965376.

The previous prime is 1381766338171. The next prime is 1381766338237. The reversal of 1381766338229 is 9228336671831.

It is a happy number.

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 1008622507204 + 373143831025 = 1004302^2 + 610855^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381766338229 - 2¹² = 1381766334133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1381766338259) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40640186402 + ... + 40640186435.

It is an arithmetic number, because the mean of its divisors is an integer number (365761677771).

Almost surely, 2^{1381766338229} is an apocalyptic number.

It is an amenable number.

1381766338229 is a deficient number, since it is larger than the sum of its proper divisors (81280372855).

1381766338229 is an equidigital number, since it uses as much as digits as its factorization.

1381766338229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81280372854.

The product of its digits is 15676416, while the sum is 59.

The spelling of 1381766338229 in words is "one trillion, three hundred eighty-one billion, seven hundred sixty-six million, three hundred thirty-eight thousand, two hundred twenty-nine".