138245691382 has 8 divisors (see below), whose sum is σ = 216384560496. Its totient is φ = 66117504552.

The previous prime is 138245691379. The next prime is 138245691391. The reversal of 138245691382 is 283196542831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×138245691382² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 1502670513 + ... + 1502670604.

It is an arithmetic number, because the mean of its divisors is an integer number (27048070062).

Almost surely, 2^138245691382 is an apocalyptic number.

138245691382 is a deficient number, since it is larger than the sum of its proper divisors (78138869114).

138245691382 is a wasteful number, since it uses less digits than its factorization.

138245691382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3005341142.

The product of its digits is 2488320, while the sum is 52.

The spelling of 138245691382 in words is "one hundred thirty-eight billion, two hundred forty-five million, six hundred ninety-one thousand, three hundred eighty-two".