138133386 has 24 divisors (see below), whose sum is σ = 300437280. Its totient is φ = 45867816.

The previous prime is 138133367. The next prime is 138133393. The reversal of 138133386 is 683331831.

It is a self number, because there is not a number n which added to its sum of digits gives 138133386.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9856 + ... + 19323.

It is an arithmetic number, because the mean of its divisors is an integer number (12518220).

Almost surely, 2^138133386 is an apocalyptic number.

138133386 is an abundant number, since it is smaller than the sum of its proper divisors (162303894).

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

138133386 is a wasteful number, since it uses less digits than its factorization.

138133386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29450 (or 29447 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 138133386 is about 11753.0160384473. The cubic root of 138133386 is about 516.9313672896.

The spelling of 138133386 in words is "one hundred thirty-eight million, one hundred thirty-three thousand, three hundred eighty-six".