1938852613 has 2 divisors, whose sum is σ = 1938852614. Its totient is φ = 1938852612.

The previous prime is 1938852547. The next prime is 1938852659. The reversal of 1938852613 is 3162588391.

It is an a-pointer prime, because the next prime (1938852659) can be obtained adding 1938852613 to its sum of digits (46).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225729 + 534626884 = 37473^2 + 23122^2 .

It is an emirp because it is prime and its reverse (3162588391) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1938852613 - 2¹³ = 1938844421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1938852673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969426306 + 969426307.

It is an arithmetic number, because the mean of its divisors is an integer number (969426307).

Almost surely, 2^1938852613 is an apocalyptic number.

It is an amenable number.

1938852613 is a deficient number, since it is larger than the sum of its proper divisors (1).

1938852613 is an equidigital number, since it uses as much as digits as its factorization.

1938852613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 311040, while the sum is 46.

The square root of 1938852613 is about 44032.4041246898. The cubic root of 1938852613 is about 1246.9477773221.

It can be divided in two parts, 1938852 and 613, that added together give a triangular number (1939465 = T₁₉₆₉).

The spelling of 1938852613 in words is "one billion, nine hundred thirty-eight million, eight hundred fifty-two thousand, six hundred thirteen".