38500215409 has 2 divisors, whose sum is σ = 38500215410. Its totient is φ = 38500215408.

The previous prime is 38500215353. The next prime is 38500215437. The reversal of 38500215409 is 90451200583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30120643809 + 8379571600 = 173553^2 + 91540^2 .

It is a cyclic number.

It is not a de Polignac number, because 38500215409 - 2¹⁵ = 38500182641 is a prime.

It is not a weakly prime, because it can be changed into another prime (38500216409) 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, 19250107704 + 19250107705.

It is an arithmetic number, because the mean of its divisors is an integer number (19250107705).

Almost surely, 2^38500215409 is an apocalyptic number.

It is an amenable number.

38500215409 is a deficient number, since it is larger than the sum of its proper divisors (1).

38500215409 is an equidigital number, since it uses as much as digits as its factorization.

38500215409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 37.

The spelling of 38500215409 in words is "thirty-eight billion, five hundred million, two hundred fifteen thousand, four hundred nine".