38301803993 has 2 divisors, whose sum is σ = 38301803994. Its totient is φ = 38301803992.

The previous prime is 38301803989. The next prime is 38301804029. The reversal of 38301803993 is 39930810383.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36608316889 + 1693487104 = 191333^2 + 41152^2 .

It is a cyclic number.

It is not a de Polignac number, because 38301803993 - 2² = 38301803989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (38301803933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19150901996 + 19150901997.

It is an arithmetic number, because the mean of its divisors is an integer number (19150901997).

Almost surely, 2^38301803993 is an apocalyptic number.

It is an amenable number.

38301803993 is a deficient number, since it is larger than the sum of its proper divisors (1).

38301803993 is an equidigital number, since it uses as much as digits as its factorization.

38301803993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 47.

The spelling of 38301803993 in words is "thirty-eight billion, three hundred one million, eight hundred three thousand, nine hundred ninety-three".