38009726899 has 2 divisors, whose sum is σ = 38009726900. Its totient is φ = 38009726898.

The previous prime is 38009726893. The next prime is 38009726921. The reversal of 38009726899 is 99862790083.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38009726899 - 2²¹ = 38007629747 is a prime.

It is not a weakly prime, because it can be changed into another prime (38009726893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19004863449 + 19004863450.

It is an arithmetic number, because the mean of its divisors is an integer number (19004863450).

Almost surely, 2^38009726899 is an apocalyptic number.

38009726899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38009726899 is an equidigital number, since it uses as much as digits as its factorization.

38009726899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 61.

The spelling of 38009726899 in words is "thirty-eight billion, nine million, seven hundred twenty-six thousand, eight hundred ninety-nine".