138818826195 has 32 divisors (see below), whose sum is σ = 254418447360. Its totient is φ = 63315457920.

The previous prime is 138818826187. The next prime is 138818826227. The reversal of 138818826195 is 591628818831.

It is not a de Polignac number, because 138818826195 - 2³ = 138818826187 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1459696 + ... + 1551885.

It is an arithmetic number, because the mean of its divisors is an integer number (7950576480).

Almost surely, 2^138818826195 is an apocalyptic number.

138818826195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

138818826195 is a deficient number, since it is larger than the sum of its proper divisors (115599621165).

138818826195 is a wasteful number, since it uses less digits than its factorization.

138818826195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012035.

The product of its digits is 6635520, while the sum is 60.

The spelling of 138818826195 in words is "one hundred thirty-eight billion, eight hundred eighteen million, eight hundred twenty-six thousand, one hundred ninety-five".