1385202913 has 2 divisors, whose sum is σ = 1385202914. Its totient is φ = 1385202912.

The previous prime is 1385202911. The next prime is 1385202947. The reversal of 1385202913 is 3192025831.

It is an a-pointer prime, because the next prime (1385202947) can be obtained adding 1385202913 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 822943969 + 562258944 = 28687^2 + 23712^2 .

It is an emirp because it is prime and its reverse (3192025831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1385202913 - 2¹ = 1385202911 is a prime.

It is a super-2 number, since 2×1385202913² = 3837574220367371138, which contains 22 as substring.

Together with 1385202911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1385202911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 692601456 + 692601457.

It is an arithmetic number, because the mean of its divisors is an integer number (692601457).

Almost surely, 2^1385202913 is an apocalyptic number.

It is an amenable number.

1385202913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1385202913 is an equidigital number, since it uses as much as digits as its factorization.

1385202913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 1385202913 is about 37218.3142149131. The cubic root of 1385202913 is about 1114.7337035565.

The spelling of 1385202913 in words is "one billion, three hundred eighty-five million, two hundred two thousand, nine hundred thirteen".