138628953619 has 8 divisors (see below), whose sum is σ = 149303129360. Its totient is φ = 127956265056.

The previous prime is 138628953611. The next prime is 138628953641. The reversal of 138628953619 is 916359826831.

138628953619 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 138628953619 - 2³ = 138628953611 is a prime.

It is a super-2 number, since 2×138628953619² (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 (138628953611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174297 + ... + 554650.

It is an arithmetic number, because the mean of its divisors is an integer number (18662891170).

Almost surely, 2^138628953619 is an apocalyptic number.

138628953619 is a deficient number, since it is larger than the sum of its proper divisors (10674175741).

138628953619 is a wasteful number, since it uses less digits than its factorization.

138628953619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 743589.

The product of its digits is 16796160, while the sum is 61.

The spelling of 138628953619 in words is "one hundred thirty-eight billion, six hundred twenty-eight million, nine hundred fifty-three thousand, six hundred nineteen".