138222353 has 2 divisors, whose sum is σ = 138222354. Its totient is φ = 138222352.

The previous prime is 138222349. The next prime is 138222377. The reversal of 138222353 is 353222831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88491649 + 49730704 = 9407^2 + 7052^2 .

It is a cyclic number.

It is not a de Polignac number, because 138222353 - 2² = 138222349 is a prime.

It is equal to p_7817321 and since 138222353 and 7817321 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (138221353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69111176 + 69111177.

It is an arithmetic number, because the mean of its divisors is an integer number (69111177).

Almost surely, 2^138222353 is an apocalyptic number.

It is an amenable number.

138222353 is a deficient number, since it is larger than the sum of its proper divisors (1).

138222353 is an equidigital number, since it uses as much as digits as its factorization.

138222353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 138222353 is about 11756.8002874932. The cubic root of 138222353 is about 517.0423227565.

The spelling of 138222353 in words is "one hundred thirty-eight million, two hundred twenty-two thousand, three hundred fifty-three".