138249109174 has 24 divisors (see below), whose sum is σ = 230574865752. Its totient is φ = 61654806720.

The previous prime is 138249109171. The next prime is 138249109211. The reversal of 138249109174 is 471901942831.

It is a super-2 number, since 2×138249109174² (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 (138249109171) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1056759 + ... + 1180354.

It is an arithmetic number, because the mean of its divisors is an integer number (9607286073).

Almost surely, 2^138249109174 is an apocalyptic number.

138249109174 is a deficient number, since it is larger than the sum of its proper divisors (92325756578).

138249109174 is a wasteful number, since it uses less digits than its factorization.

138249109174 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237232 (or 2237179 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 49.

The spelling of 138249109174 in words is "one hundred thirty-eight billion, two hundred forty-nine million, one hundred nine thousand, one hundred seventy-four".