5538838381 has 2 divisors, whose sum is σ = 5538838382. Its totient is φ = 5538838380.

The previous prime is 5538838339. The next prime is 5538838387. The reversal of 5538838381 is 1838388355.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4806648900 + 732189481 = 69330^2 + 27059^2 .

It is a cyclic number.

It is not a de Polignac number, because 5538838381 - 2²⁹ = 5001967469 is a prime.

It is a super-2 number, since 2×5538838381² = 61357461221677402322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5538838387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2769419190 + 2769419191.

It is an arithmetic number, because the mean of its divisors is an integer number (2769419191).

Almost surely, 2^5538838381 is an apocalyptic number.

It is an amenable number.

5538838381 is a deficient number, since it is larger than the sum of its proper divisors (1).

5538838381 is an equidigital number, since it uses as much as digits as its factorization.

5538838381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2764800, while the sum is 52.

The square root of 5538838381 is about 74423.3725451891. The cubic root of 5538838381 is about 1769.3193655918.

The spelling of 5538838381 in words is "five billion, five hundred thirty-eight million, eight hundred thirty-eight thousand, three hundred eighty-one".