1380921830069 has 2 divisors, whose sum is σ = 1380921830070. Its totient is φ = 1380921830068.

The previous prime is 1380921829997. The next prime is 1380921830143. The reversal of 1380921830069 is 9600381290831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982051270225 + 398870559844 = 990985^2 + 631562^2 .

It is an emirp because it is prime and its reverse (9600381290831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1380921830069 - 2⁸ = 1380921829813 is a prime.

It is a super-2 number, since 2×1380921830069² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1380921829999 and 1380921830026.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380921830969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690460915034 + 690460915035.

It is an arithmetic number, because the mean of its divisors is an integer number (690460915035).

Almost surely, 2^{1380921830069} is an apocalyptic number.

It is an amenable number.

1380921830069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380921830069 is an equidigital number, since it uses as much as digits as its factorization.

1380921830069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The spelling of 1380921830069 in words is "one trillion, three hundred eighty billion, nine hundred twenty-one million, eight hundred thirty thousand, sixty-nine".