38243890129 has 2 divisors, whose sum is σ = 38243890130. Its totient is φ = 38243890128.

The previous prime is 38243890109. The next prime is 38243890189. The reversal of 38243890129 is 92109834283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22724959504 + 15518930625 = 150748^2 + 124575^2 .

It is a cyclic number.

It is not a de Polignac number, because 38243890129 - 2⁹ = 38243889617 is a prime.

It is not a weakly prime, because it can be changed into another prime (38243890109) 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, 19121945064 + 19121945065.

It is an arithmetic number, because the mean of its divisors is an integer number (19121945065).

Almost surely, 2^38243890129 is an apocalyptic number.

It is an amenable number.

38243890129 is a deficient number, since it is larger than the sum of its proper divisors (1).

38243890129 is an equidigital number, since it uses as much as digits as its factorization.

38243890129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 38243890129 in words is "thirty-eight billion, two hundred forty-three million, eight hundred ninety thousand, one hundred twenty-nine".