3838257749 has 2 divisors, whose sum is σ = 3838257750. Its totient is φ = 3838257748.

The previous prime is 3838257737. The next prime is 3838257757. The reversal of 3838257749 is 9477528383.

3838257749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3836935249 + 1322500 = 61943^2 + 1150^2 .

It is an emirp because it is prime and its reverse (9477528383) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3838257749 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3838257694 and 3838257703.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3838257719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1919128874 + 1919128875.

It is an arithmetic number, because the mean of its divisors is an integer number (1919128875).

Almost surely, 2^3838257749 is an apocalyptic number.

It is an amenable number.

3838257749 is a deficient number, since it is larger than the sum of its proper divisors (1).

3838257749 is an equidigital number, since it uses as much as digits as its factorization.

3838257749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10160640, while the sum is 56.

The square root of 3838257749 is about 61953.6742171116. The cubic root of 3838257749 is about 1565.7101914029.

The spelling of 3838257749 in words is "three billion, eight hundred thirty-eight million, two hundred fifty-seven thousand, seven hundred forty-nine".