38556189313 has 2 divisors, whose sum is σ = 38556189314. Its totient is φ = 38556189312.

The previous prime is 38556189293. The next prime is 38556189319. The reversal of 38556189313 is 31398165583.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31064767504 + 7491421809 = 176252^2 + 86553^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38556189313 is a prime.

It is not a weakly prime, because it can be changed into another prime (38556189319) 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, 19278094656 + 19278094657.

It is an arithmetic number, because the mean of its divisors is an integer number (19278094657).

Almost surely, 2^38556189313 is an apocalyptic number.

It is an amenable number.

38556189313 is a deficient number, since it is larger than the sum of its proper divisors (1).

38556189313 is an equidigital number, since it uses as much as digits as its factorization.

38556189313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2332800, while the sum is 52.

The spelling of 38556189313 in words is "thirty-eight billion, five hundred fifty-six million, one hundred eighty-nine thousand, three hundred thirteen".