138998331782 has 8 divisors (see below), whose sum is σ = 208499784456. Its totient is φ = 69498403632.

The previous prime is 138998331761. The next prime is 138998331839. The reversal of 138998331782 is 287133899831.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116423 + ... + 539954.

It is an arithmetic number, because the mean of its divisors is an integer number (26062473057).

Almost surely, 2^138998331782 is an apocalyptic number.

138998331782 is a deficient number, since it is larger than the sum of its proper divisors (69501452674).

138998331782 is a wasteful number, since it uses less digits than its factorization.

138998331782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762262.

The product of its digits is 15676416, while the sum is 62.

The spelling of 138998331782 in words is "one hundred thirty-eight billion, nine hundred ninety-eight million, three hundred thirty-one thousand, seven hundred eighty-two".