138071120389 has 8 divisors (see below), whose sum is σ = 139087858968. Its totient is φ = 137054511360.

The previous prime is 138071120371. The next prime is 138071120399. The reversal of 138071120389 is 983021170831.

It can be written as a sum of positive squares in 4 ways, for example, as 11399192289 + 126671928100 = 106767^2 + 355910^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 138071120389 - 2³¹ = 135923636741 is a prime.

It is a super-2 number, since 2×138071120389² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138071120399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3578569 + ... + 3616945.

It is an arithmetic number, because the mean of its divisors is an integer number (17385982371).

Almost surely, 2^138071120389 is an apocalyptic number.

It is an amenable number.

138071120389 is a deficient number, since it is larger than the sum of its proper divisors (1016738579).

138071120389 is a wasteful number, since it uses less digits than its factorization.

138071120389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64775.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 138071120389 in words is "one hundred thirty-eight billion, seventy-one million, one hundred twenty thousand, three hundred eighty-nine".