138250192 has 20 divisors (see below), whose sum is σ = 277097220. Its totient is φ = 66741248.

The previous prime is 138250187. The next prime is 138250199. The reversal of 138250192 is 291052831.

It can be written as a sum of positive squares in 2 ways, for example, as 69956496 + 68293696 = 8364^2 + 8264^2 .

It is a super-2 number, since 2×138250192² = 38226231176073728, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138250199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148513 + ... + 149440.

It is an arithmetic number, because the mean of its divisors is an integer number (13854861).

Almost surely, 2^138250192 is an apocalyptic number.

It is an amenable number.

138250192 is an abundant number, since it is smaller than the sum of its proper divisors (138847028).

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

138250192 is a wasteful number, since it uses less digits than its factorization.

138250192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297990 (or 297984 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 138250192 is about 11757.9841809725. The cubic root of 138250192 is about 517.0770324704.

The spelling of 138250192 in words is "one hundred thirty-eight million, two hundred fifty thousand, one hundred ninety-two".