138149 has 8 divisors (see below), whose sum is σ = 158880. Its totient is φ = 118800.

The previous prime is 138143. The next prime is 138157. The reversal of 138149 is 941831.

138149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138149 - 2¹² = 134053 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122 + ... + 539.

It is an arithmetic number, because the mean of its divisors is an integer number (19860).

2¹³⁸¹⁴⁹ is an apocalyptic number.

138149 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

138149 is a deficient number, since it is larger than the sum of its proper divisors (20731).

138149 is a wasteful number, since it uses less digits than its factorization.

138149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691.

The product of its digits is 864, while the sum is 26.

The square root of 138149 is about 371.6840055746. The cubic root of 138149 is about 51.6950843784.

The spelling of 138149 in words is "one hundred thirty-eight thousand, one hundred forty-nine".