38992121899 has 2 divisors, whose sum is σ = 38992121900. Its totient is φ = 38992121898.

The previous prime is 38992121843. The next prime is 38992121929. The reversal of 38992121899 is 99812129983.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38992121899 - 2¹⁵ = 38992089131 is a prime.

It is not a weakly prime, because it can be changed into another prime (38992125899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19496060949 + 19496060950.

It is an arithmetic number, because the mean of its divisors is an integer number (19496060950).

Almost surely, 2^38992121899 is an apocalyptic number.

38992121899 is a deficient number, since it is larger than the sum of its proper divisors (1).

38992121899 is an equidigital number, since it uses as much as digits as its factorization.

38992121899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 61.

The spelling of 38992121899 in words is "thirty-eight billion, nine hundred ninety-two million, one hundred twenty-one thousand, eight hundred ninety-nine".