138313468 has 12 divisors (see below), whose sum is σ = 243897192. Its totient is φ = 68628560.

The previous prime is 138313463. The next prime is 138313471. The reversal of 138313468 is 864313831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138313463) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131455 + ... + 132502.

It is an arithmetic number, because the mean of its divisors is an integer number (20324766).

Almost surely, 2^138313468 is an apocalyptic number.

It is an amenable number.

138313468 is a deficient number, since it is larger than the sum of its proper divisors (105583724).

138313468 is a wasteful number, since it uses less digits than its factorization.

138313468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264092 (or 264090 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 138313468 is about 11760.6746405128. The cubic root of 138313468 is about 517.1559077699.

The spelling of 138313468 in words is "one hundred thirty-eight million, three hundred thirteen thousand, four hundred sixty-eight".