13340958138 has 24 divisors (see below), whose sum is σ = 28911037428. Its totient is φ = 4446120192.

The previous prime is 13340958079. The next prime is 13340958139. The reversal of 13340958138 is 83185904331.

13340958138 is a `hidden beast` number, since 1 + 3 + 34 + 0 + 9 + 581 + 38 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13340943009 + 15129 = 115503^2 + 123^2 .

It is a junction number, because it is equal to n+sod(n) for n = 13340958093 and 13340958102.

It is not an unprimeable number, because it can be changed into a prime (13340958139) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26506 + ... + 165482.

Almost surely, 2^13340958138 is an apocalyptic number.

13340958138 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

13340958138 is an abundant number, since it is smaller than the sum of its proper divisors (15570079290).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13340958138 is a wasteful number, since it uses less digits than its factorization.

13340958138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144318 (or 144315 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 13340958138 in words is "thirteen billion, three hundred forty million, nine hundred fifty-eight thousand, one hundred thirty-eight".