138732394260 has 24 divisors (see below), whose sum is σ = 388450704096. Its totient is φ = 36995305120.

The previous prime is 138732394249. The next prime is 138732394271. The reversal of 138732394260 is 62493237831.

It is an interprime number because it is at equal distance from previous prime (138732394249) and next prime (138732394271).

It is a super-2 number, since 2×138732394260² (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 7 ways as a sum of consecutive naturals, for example, 1156103226 + ... + 1156103345.

It is an arithmetic number, because the mean of its divisors is an integer number (16185446004).

Almost surely, 2^138732394260 is an apocalyptic number.

138732394260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138732394260 is an abundant number, since it is smaller than the sum of its proper divisors (249718309836).

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

138732394260 is a wasteful number, since it uses less digits than its factorization.

138732394260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2312206583 (or 2312206581 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 48.

The spelling of 138732394260 in words is "one hundred thirty-eight billion, seven hundred thirty-two million, three hundred ninety-four thousand, two hundred sixty".