138196782 has 12 divisors (see below), whose sum is σ = 299426400. Its totient is φ = 46065588.

The previous prime is 138196763. The next prime is 138196789. The reversal of 138196782 is 287691831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138196789) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3838782 + ... + 3838817.

It is an arithmetic number, because the mean of its divisors is an integer number (24952200).

Almost surely, 2^138196782 is an apocalyptic number.

138196782 is an abundant number, since it is smaller than the sum of its proper divisors (161229618).

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

138196782 is a wasteful number, since it uses less digits than its factorization.

138196782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7677607 (or 7677604 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 138196782 is about 11755.7127389197. The cubic root of 138196782 is about 517.0104366822.

The spelling of 138196782 in words is "one hundred thirty-eight million, one hundred ninety-six thousand, seven hundred eighty-two".