138388069619 has 8 divisors (see below), whose sum is σ = 140666913408. Its totient is φ = 136109554560.

The previous prime is 138388069583. The next prime is 138388069627. The reversal of 138388069619 is 916960883831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 138388069619 - 2¹² = 138388065523 is a prime.

It is a super-2 number, since 2×138388069619² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138388069669) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 853694 + ... + 1002780.

It is an arithmetic number, because the mean of its divisors is an integer number (17583364176).

Almost surely, 2^138388069619 is an apocalyptic number.

138388069619 is a deficient number, since it is larger than the sum of its proper divisors (2278843789).

138388069619 is a wasteful number, since it uses less digits than its factorization.

138388069619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164365.

The product of its (nonzero) digits is 13436928, while the sum is 62.

The spelling of 138388069619 in words is "one hundred thirty-eight billion, three hundred eighty-eight million, sixty-nine thousand, six hundred nineteen".