138382436 has 12 divisors (see below), whose sum is σ = 243656112. Its totient is φ = 68766408.

The previous prime is 138382381. The next prime is 138382459. The reversal of 138382436 is 634283831.

It is a self number, because there is not a number n which added to its sum of digits gives 138382436.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105470 + ... + 106773.

It is an arithmetic number, because the mean of its divisors is an integer number (20304676).

Almost surely, 2^138382436 is an apocalyptic number.

It is an amenable number.

138382436 is a deficient number, since it is larger than the sum of its proper divisors (105273676).

138382436 is a wasteful number, since it uses less digits than its factorization.

138382436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212410 (or 212408 counting only the distinct ones).

The product of its digits is 82944, while the sum is 38.

The square root of 138382436 is about 11763.6064198017. The cubic root of 138382436 is about 517.2418509117.

The spelling of 138382436 in words is "one hundred thirty-eight million, three hundred eighty-two thousand, four hundred thirty-six".