1381620828853 has 2 divisors, whose sum is σ = 1381620828854. Its totient is φ = 1381620828852.

The previous prime is 1381620828817. The next prime is 1381620828859. The reversal of 1381620828853 is 3588280261831.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1176309438084 + 205311390769 = 1084578^2 + 453113^2 .

It is a cyclic number.

It is not a de Polignac number, because 1381620828853 - 2²⁵ = 1381587274421 is a prime.

It is a super-2 number, since 2×1381620828853² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1381620828794 and 1381620828803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1381620828859) 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 as a sum of consecutive naturals, namely, 690810414426 + 690810414427.

It is an arithmetic number, because the mean of its divisors is an integer number (690810414427).

Almost surely, 2^{1381620828853} is an apocalyptic number.

It is an amenable number.

1381620828853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1381620828853 is an equidigital number, since it uses as much as digits as its factorization.

1381620828853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4423680, while the sum is 55.

The spelling of 1381620828853 in words is "one trillion, three hundred eighty-one billion, six hundred twenty million, eight hundred twenty-eight thousand, eight hundred fifty-three".