138250391470 has 8 divisors (see below), whose sum is σ = 248850704664. Its totient is φ = 55300156584.

The previous prime is 138250391417. The next prime is 138250391471. The reversal of 138250391470 is 74193052831.

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

It is a super-2 number, since 2×138250391470² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138250391471) 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, 6912519564 + ... + 6912519583.

It is an arithmetic number, because the mean of its divisors is an integer number (31106338083).

Almost surely, 2^138250391470 is an apocalyptic number.

138250391470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138250391470 is a deficient number, since it is larger than the sum of its proper divisors (110600313194).

138250391470 is a wasteful number, since it uses less digits than its factorization.

138250391470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13825039154.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 138250391470 in words is "one hundred thirty-eight billion, two hundred fifty million, three hundred ninety-one thousand, four hundred seventy".