38188149 has 4 divisors (see below), whose sum is σ = 50917536. Its totient is φ = 25458764.

The previous prime is 38188147. The next prime is 38188207. The reversal of 38188149 is 94188183.

38188149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94188183 = 3 ⋅31396061.

It is a cyclic number.

It is not a de Polignac number, because 38188149 - 2¹ = 38188147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 38188149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38188147) 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 in 3 ways as a sum of consecutive naturals, for example, 6364689 + ... + 6364694.

It is an arithmetic number, because the mean of its divisors is an integer number (12729384).

Almost surely, 2^38188149 is an apocalyptic number.

It is an amenable number.

38188149 is a deficient number, since it is larger than the sum of its proper divisors (12729387).

38188149 is a wasteful number, since it uses less digits than its factorization.

38188149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12729386.

The product of its digits is 55296, while the sum is 42.

The square root of 38188149 is about 6179.6560583903. The cubic root of 38188149 is about 336.7514978640.

The spelling of 38188149 in words is "thirty-eight million, one hundred eighty-eight thousand, one hundred forty-nine".