138746094208 has 32 divisors (see below), whose sum is σ = 276484344660. Its totient is φ = 69353945088.

The previous prime is 138746094191. The next prime is 138746094251. The reversal of 138746094208 is 802490647831.

It can be written as a sum of positive squares in 2 ways, for example, as 137902307904 + 843786304 = 371352^2 + 29048^2 .

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×138746094208² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 323260 + ... + 618052.

Almost surely, 2^138746094208 is an apocalyptic number.

It is an amenable number.

138746094208 is a deficient number, since it is larger than the sum of its proper divisors (137738250452).

138746094208 is an equidigital number, since it uses as much as digits as its factorization.

138746094208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298484 (or 298472 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 52.

The spelling of 138746094208 in words is "one hundred thirty-eight billion, seven hundred forty-six million, ninety-four thousand, two hundred eight".