3838745507381 has 2 divisors, whose sum is σ = 3838745507382. Its totient is φ = 3838745507380.

The previous prime is 3838745507353. The next prime is 3838745507393. The reversal of 3838745507381 is 1837055478383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2867010900625 + 971734606756 = 1693225^2 + 985766^2 .

It is a cyclic number.

It is not a de Polignac number, because 3838745507381 - 2³⁸ = 3563867600437 is a prime.

It is a super-2 number, since 2×3838745507381² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3838745507321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1919372753690 + 1919372753691.

It is an arithmetic number, because the mean of its divisors is an integer number (1919372753691).

Almost surely, 2^{3838745507381} is an apocalyptic number.

It is an amenable number.

3838745507381 is a deficient number, since it is larger than the sum of its proper divisors (1).

3838745507381 is an equidigital number, since it uses as much as digits as its factorization.

3838745507381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67737600, while the sum is 62.

The spelling of 3838745507381 in words is "three trillion, eight hundred thirty-eight billion, seven hundred forty-five million, five hundred seven thousand, three hundred eighty-one".