38136475849 has 2 divisors, whose sum is σ = 38136475850. Its totient is φ = 38136475848.

The previous prime is 38136475843. The next prime is 38136475903. The reversal of 38136475849 is 94857463183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21779856400 + 16356619449 = 147580^2 + 127893^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38136475849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38136475793 and 38136475802.

It is not a weakly prime, because it can be changed into another prime (38136475843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19068237924 + 19068237925.

It is an arithmetic number, because the mean of its divisors is an integer number (19068237925).

Almost surely, 2^38136475849 is an apocalyptic number.

It is an amenable number.

38136475849 is a deficient number, since it is larger than the sum of its proper divisors (1).

38136475849 is an equidigital number, since it uses as much as digits as its factorization.

38136475849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17418240, while the sum is 58.

The spelling of 38136475849 in words is "thirty-eight billion, one hundred thirty-six million, four hundred seventy-five thousand, eight hundred forty-nine".