1380705258169 has 4 divisors (see below), whose sum is σ = 1403339770660. Its totient is φ = 1358070745680.

The previous prime is 1380705258091. The next prime is 1380705258193. The reversal of 1380705258169 is 9618525070831.

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 447139629225 + 933565628944 = 668685^2 + 966212^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380705258169 - 2²³ = 1380696869561 is a prime.

It is a super-2 number, since 2×1380705258169² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1380705268169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11317256154 + ... + 11317256275.

It is an arithmetic number, because the mean of its divisors is an integer number (350834942665).

Almost surely, 2^{1380705258169} is an apocalyptic number.

It is an amenable number.

1380705258169 is a deficient number, since it is larger than the sum of its proper divisors (22634512491).

1380705258169 is an equidigital number, since it uses as much as digits as its factorization.

1380705258169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22634512490.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 1380705258169 in words is "one trillion, three hundred eighty billion, seven hundred five million, two hundred fifty-eight thousand, one hundred sixty-nine".