138271386 has 16 divisors (see below), whose sum is σ = 301683168. Its totient is φ = 41900400.

The previous prime is 138271361. The next prime is 138271429. The reversal of 138271386 is 683172831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1047445 + ... + 1047576.

It is an arithmetic number, because the mean of its divisors is an integer number (18855198).

Almost surely, 2^138271386 is an apocalyptic number.

138271386 is an abundant number, since it is smaller than the sum of its proper divisors (163411782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138271386 is a wasteful number, since it uses less digits than its factorization.

138271386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095037.

The product of its digits is 48384, while the sum is 39.

The square root of 138271386 is about 11758.8854063640. The cubic root of 138271386 is about 517.1034540628.

The spelling of 138271386 in words is "one hundred thirty-eight million, two hundred seventy-one thousand, three hundred eighty-six".