38913189 has 16 divisors (see below), whose sum is σ = 59727360. Its totient is φ = 22074480.

The previous prime is 38913169. The next prime is 38913191. The reversal of 38913189 is 98131983.

It is a happy number.

It is not a de Polignac number, because 38913189 - 2¹³ = 38904997 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 38913189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38913169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3747 + ... + 9584.

It is an arithmetic number, because the mean of its divisors is an integer number (3732960).

Almost surely, 2^38913189 is an apocalyptic number.

It is an amenable number.

38913189 is a deficient number, since it is larger than the sum of its proper divisors (20814171).

38913189 is a wasteful number, since it uses less digits than its factorization.

38913189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13480.

The product of its digits is 46656, while the sum is 42.

The square root of 38913189 is about 6238.0436837201. The cubic root of 38913189 is about 338.8693381816.

The spelling of 38913189 in words is "thirty-eight million, nine hundred thirteen thousand, one hundred eighty-nine".