138482149 has 18 divisors (see below), whose sum is σ = 156858450. Its totient is φ = 122192928.

The previous prime is 138482143. The next prime is 138482159. The reversal of 138482149 is 941284831.

It can be written as a sum of positive squares in 3 ways, for example, as 889249 + 137592900 = 943^2 + 11730^2 .

It is not a de Polignac number, because 138482149 - 2¹⁹ = 137957861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138482143) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 88627 + ... + 90175.

Almost surely, 2^138482149 is an apocalyptic number.

It is an amenable number.

138482149 is a deficient number, since it is larger than the sum of its proper divisors (18376301).

138482149 is a wasteful number, since it uses less digits than its factorization.

138482149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1621 (or 1585 counting only the distinct ones).

The product of its digits is 55296, while the sum is 40.

The square root of 138482149 is about 11767.8438551843. The cubic root of 138482149 is about 517.3660558693.

The spelling of 138482149 in words is "one hundred thirty-eight million, four hundred eighty-two thousand, one hundred forty-nine".