138321463819 has 8 divisors (see below), whose sum is σ = 172452734208. Its totient is φ = 107782958760.

The previous prime is 138321463811. The next prime is 138321463831. The reversal of 138321463819 is 918364123831.

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 138321463819 - 2³ = 138321463811 is a prime.

It is a super-2 number, since 2×138321463819² (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 (138321463811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 898191247 + ... + 898191400.

It is an arithmetic number, because the mean of its divisors is an integer number (21556591776).

Almost surely, 2^138321463819 is an apocalyptic number.

138321463819 is a deficient number, since it is larger than the sum of its proper divisors (34131270389).

138321463819 is a wasteful number, since it uses less digits than its factorization.

138321463819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796382665.

The product of its digits is 746496, while the sum is 49.

The spelling of 138321463819 in words is "one hundred thirty-eight billion, three hundred twenty-one million, four hundred sixty-three thousand, eight hundred nineteen".