138132193 has 4 divisors (see below), whose sum is σ = 138416320. Its totient is φ = 137848068.

The previous prime is 138132179. The next prime is 138132229. The reversal of 138132193 is 391231831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 391231831 = 19 ⋅20591149.

It is a cyclic number.

It is not a de Polignac number, because 138132193 - 2⁵ = 138132161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138130193) 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, 141333 + ... + 142306.

It is an arithmetic number, because the mean of its divisors is an integer number (34604080).

Almost surely, 2^138132193 is an apocalyptic number.

It is an amenable number.

138132193 is a deficient number, since it is larger than the sum of its proper divisors (284127).

138132193 is an equidigital number, since it uses as much as digits as its factorization.

138132193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284126.

The product of its digits is 3888, while the sum is 31.

The square root of 138132193 is about 11752.9652854078. The cubic root of 138132193 is about 516.9298791123.

The spelling of 138132193 in words is "one hundred thirty-eight million, one hundred thirty-two thousand, one hundred ninety-three".