138471466 has 16 divisors (see below), whose sum is σ = 241404480. Its totient is φ = 58338720.

The previous prime is 138471419. The next prime is 138471467. The reversal of 138471466 is 664174831.

It is not an unprimeable number, because it can be changed into a prime (138471467) 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, 82995 + ... + 84646.

It is an arithmetic number, because the mean of its divisors is an integer number (15087780).

Almost surely, 2^138471466 is an apocalyptic number.

138471466 is a deficient number, since it is larger than the sum of its proper divisors (102933014).

138471466 is a wasteful number, since it uses less digits than its factorization.

138471466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167709.

The product of its digits is 96768, while the sum is 40.

The square root of 138471466 is about 11767.3899399994. The cubic root of 138471466 is about 517.3527517148.

The spelling of 138471466 in words is "one hundred thirty-eight million, four hundred seventy-one thousand, four hundred sixty-six".