38155189 has 2 divisors, whose sum is σ = 38155190. Its totient is φ = 38155188.

The previous prime is 38155181. The next prime is 38155193. The reversal of 38155189 is 98155183.

38155189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37088100 + 1067089 = 6090^2 + 1033^2 .

It is a cyclic number.

It is not a de Polignac number, because 38155189 - 2³ = 38155181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38155181) 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, 19077594 + 19077595.

It is an arithmetic number, because the mean of its divisors is an integer number (19077595).

Almost surely, 2^38155189 is an apocalyptic number.

It is an amenable number.

38155189 is a deficient number, since it is larger than the sum of its proper divisors (1).

38155189 is an equidigital number, since it uses as much as digits as its factorization.

38155189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 40.

The square root of 38155189 is about 6176.9886676276. The cubic root of 38155189 is about 336.6545871343.

The spelling of 38155189 in words is "thirty-eight million, one hundred fifty-five thousand, one hundred eighty-nine".