138510782 has 8 divisors (see below), whose sum is σ = 207817896. Its totient is φ = 69238152.

The previous prime is 138510733. The next prime is 138510787. The reversal of 138510782 is 287015831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138510787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313 + ... + 18179.

It is an arithmetic number, because the mean of its divisors is an integer number (25977237).

Almost surely, 2^138510782 is an apocalyptic number.

138510782 is a deficient number, since it is larger than the sum of its proper divisors (69307114).

138510782 is a wasteful number, since it uses less digits than its factorization.

138510782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17242.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 138510782 is about 11769.0603703099. The cubic root of 138510782 is about 517.4017108172.

It can be divided in two parts, 1385 and 10782, that added together give a cube (12167 = 23³).

The spelling of 138510782 in words is "one hundred thirty-eight million, five hundred ten thousand, seven hundred eighty-two".