38831216069 has 2 divisors, whose sum is σ = 38831216070. Its totient is φ = 38831216068.

The previous prime is 38831216059. The next prime is 38831216087. The reversal of 38831216069 is 96061213883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37670928100 + 1160287969 = 194090^2 + 34063^2 .

It is an emirp because it is prime and its reverse (96061213883) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38831216069 - 2²⁴ = 38814438853 is a prime.

It is a super-2 number, since 2×38831216069² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38831216059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19415608034 + 19415608035.

It is an arithmetic number, because the mean of its divisors is an integer number (19415608035).

Almost surely, 2^38831216069 is an apocalyptic number.

It is an amenable number.

38831216069 is a deficient number, since it is larger than the sum of its proper divisors (1).

38831216069 is an equidigital number, since it uses as much as digits as its factorization.

38831216069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 47.

The spelling of 38831216069 in words is "thirty-eight billion, eight hundred thirty-one million, two hundred sixteen thousand, sixty-nine".