138576319 has 4 divisors (see below), whose sum is σ = 158372944. Its totient is φ = 118779696.

The previous prime is 138576281. The next prime is 138576371. The reversal of 138576319 is 913675831.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 138576319 - 2¹⁷ = 138445247 is a prime.

It is a super-2 number, since 2×138576319² = 38406792375179522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138576379) 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, 9898302 + ... + 9898315.

It is an arithmetic number, because the mean of its divisors is an integer number (39593236).

Almost surely, 2^138576319 is an apocalyptic number.

138576319 is a deficient number, since it is larger than the sum of its proper divisors (19796625).

138576319 is an equidigital number, since it uses as much as digits as its factorization.

138576319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19796624.

The product of its digits is 136080, while the sum is 43.

The square root of 138576319 is about 11771.8443329837. The cubic root of 138576319 is about 517.4833015997.

The spelling of 138576319 in words is "one hundred thirty-eight million, five hundred seventy-six thousand, three hundred nineteen".