138232373 has 2 divisors, whose sum is σ = 138232374. Its totient is φ = 138232372.

The previous prime is 138232349. The next prime is 138232399. The reversal of 138232373 is 373232831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 128640964 + 9591409 = 11342^2 + 3097^2 .

It is a cyclic number.

It is not a de Polignac number, because 138232373 - 2¹⁰ = 138231349 is a prime.

It is a super-2 number, since 2×138232373² = 38216377890422258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138232343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69116186 + 69116187.

It is an arithmetic number, because the mean of its divisors is an integer number (69116187).

Almost surely, 2^138232373 is an apocalyptic number.

It is an amenable number.

138232373 is a deficient number, since it is larger than the sum of its proper divisors (1).

138232373 is an equidigital number, since it uses as much as digits as its factorization.

138232373 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 138232373 is about 11757.2264161238. The cubic root of 138232373 is about 517.0548162468.

The spelling of 138232373 in words is "one hundred thirty-eight million, two hundred thirty-two thousand, three hundred seventy-three".