138425193 has 24 divisors (see below), whose sum is σ = 208100256. Its totient is φ = 91951200.

The previous prime is 138425141. The next prime is 138425219. The reversal of 138425193 is 391524831.

138425193 is a `hidden beast` number, since 138 + 4 + 2 + 519 + 3 = 666.

It is not a de Polignac number, because 138425193 - 2⁹ = 138424681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138425123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 79573 + ... + 81293.

It is an arithmetic number, because the mean of its divisors is an integer number (8670844).

Almost surely, 2^138425193 is an apocalyptic number.

It is an amenable number.

138425193 is a deficient number, since it is larger than the sum of its proper divisors (69675063).

138425193 is an equidigital number, since it uses as much as digits as its factorization.

138425193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2067 (or 2055 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 138425193 is about 11765.4236217826. The cubic root of 138425193 is about 517.2951173837.

The spelling of 138425193 in words is "one hundred thirty-eight million, four hundred twenty-five thousand, one hundred ninety-three".