38528391761 has 2 divisors, whose sum is σ = 38528391762. Its totient is φ = 38528391760.

The previous prime is 38528391739. The next prime is 38528391809. The reversal of 38528391761 is 16719382583.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29021166736 + 9507225025 = 170356^2 + 97505^2 .

It is an emirp because it is prime and its reverse (16719382583) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 38528391761 - 2¹⁰ = 38528390737 is a prime.

It is a super-2 number, since 2×38528391761² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38528391361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19264195880 + 19264195881.

It is an arithmetic number, because the mean of its divisors is an integer number (19264195881).

Almost surely, 2^38528391761 is an apocalyptic number.

It is an amenable number.

38528391761 is a deficient number, since it is larger than the sum of its proper divisors (1).

38528391761 is an equidigital number, since it uses as much as digits as its factorization.

38528391761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 53.

The spelling of 38528391761 in words is "thirty-eight billion, five hundred twenty-eight million, three hundred ninety-one thousand, seven hundred sixty-one".