38218555369 has 2 divisors, whose sum is σ = 38218555370. Its totient is φ = 38218555368.

The previous prime is 38218555357. The next prime is 38218555387. The reversal of 38218555369 is 96355581283.

38218555369 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31598617600 + 6619937769 = 177760^2 + 81363^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38218555369 is a prime.

It is a super-2 number, since 2×38218555369² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38218555399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19109277684 + 19109277685.

It is an arithmetic number, because the mean of its divisors is an integer number (19109277685).

Almost surely, 2^38218555369 is an apocalyptic number.

It is an amenable number.

38218555369 is a deficient number, since it is larger than the sum of its proper divisors (1).

38218555369 is an equidigital number, since it uses as much as digits as its factorization.

38218555369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776000, while the sum is 55.

The spelling of 38218555369 in words is "thirty-eight billion, two hundred eighteen million, five hundred fifty-five thousand, three hundred sixty-nine".