138283418 has 16 divisors (see below), whose sum is σ = 255292800. Its totient is φ = 54705456.

The previous prime is 138283391. The next prime is 138283451. The reversal of 138283418 is 814382831.

138283418 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

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, 379718 + ... + 380081.

It is an arithmetic number, because the mean of its divisors is an integer number (15955800).

Almost surely, 2^138283418 is an apocalyptic number.

138283418 is a deficient number, since it is larger than the sum of its proper divisors (117009382).

138283418 is a wasteful number, since it uses less digits than its factorization.

138283418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759821.

The product of its digits is 36864, while the sum is 38.

The square root of 138283418 is about 11759.3970083504. The cubic root of 138283418 is about 517.1184526065.

The spelling of 138283418 in words is "one hundred thirty-eight million, two hundred eighty-three thousand, four hundred eighteen".