38111987 has 2 divisors, whose sum is σ = 38111988. Its totient is φ = 38111986.

The previous prime is 38111963. The next prime is 38111999. The reversal of 38111987 is 78911183.

38111987 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 is a cyclic number.

It is not a de Polignac number, because 38111987 - 2⁶ = 38111923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38111987.

It is not a weakly prime, because it can be changed into another prime (38111917) 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, 19055993 + 19055994.

It is an arithmetic number, because the mean of its divisors is an integer number (19055994).

Almost surely, 2^38111987 is an apocalyptic number.

38111987 is a deficient number, since it is larger than the sum of its proper divisors (1).

38111987 is an equidigital number, since it uses as much as digits as its factorization.

38111987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 38.

The square root of 38111987 is about 6173.4906657417. The cubic root of 38111987 is about 336.5274777806.

The spelling of 38111987 in words is "thirty-eight million, one hundred eleven thousand, nine hundred eighty-seven".