1381219081353 has 12 divisors (see below), whose sum is σ = 1995131004100. Its totient is φ = 920795747616.

The previous prime is 1381219081339. The next prime is 1381219081453. The reversal of 1381219081353 is 3531809121831.

1381219081353 is a `hidden beast` number, since 1 + 3 + 8 + 1 + 219 + 0 + 81 + 353 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 410505459849 + 970713621504 = 640707^2 + 985248^2 .

It is not a de Polignac number, because 1381219081353 - 2¹³ = 1381219073161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1381219081299 and 1381219081308.

It is not an unprimeable number, because it can be changed into a prime (1381219081303) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 888778 + ... + 1884771.

Almost surely, 2^{1381219081353} is an apocalyptic number.

It is an amenable number.

1381219081353 is a deficient number, since it is larger than the sum of its proper divisors (613911922747).

1381219081353 is a wasteful number, since it uses less digits than its factorization.

1381219081353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2828888 (or 2828885 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The spelling of 1381219081353 in words is "one trillion, three hundred eighty-one billion, two hundred nineteen million, eighty-one thousand, three hundred fifty-three".