1383765613 has 2 divisors, whose sum is σ = 1383765614. Its totient is φ = 1383765612.

The previous prime is 1383765599. The next prime is 1383765619. The reversal of 1383765613 is 3165673831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1098392164 + 285373449 = 33142^2 + 16893^2 .

It is a cyclic number.

It is not a de Polignac number, because 1383765613 - 2⁹ = 1383765101 is a prime.

It is a super-3 number, since 3×1383765613³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1383765613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1383765619) 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 as a sum of consecutive naturals, namely, 691882806 + 691882807.

It is an arithmetic number, because the mean of its divisors is an integer number (691882807).

Almost surely, 2^1383765613 is an apocalyptic number.

It is an amenable number.

1383765613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1383765613 is an equidigital number, since it uses as much as digits as its factorization.

1383765613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 43.

The square root of 1383765613 is about 37199.0001612947. Note that the first 3 decimals coincide. The cubic root of 1383765613 is about 1114.3480172883.

The spelling of 1383765613 in words is "one billion, three hundred eighty-three million, seven hundred sixty-five thousand, six hundred thirteen".