138674353 has 2 divisors, whose sum is σ = 138674354. Its totient is φ = 138674352.

The previous prime is 138674351. The next prime is 138674357. The reversal of 138674353 is 353476831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 73839649 + 64834704 = 8593^2 + 8052^2 .

It is a cyclic number.

It is not a de Polignac number, because 138674353 - 2¹ = 138674351 is a prime.

Together with 138674351, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (138674351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69337176 + 69337177.

It is an arithmetic number, because the mean of its divisors is an integer number (69337177).

Almost surely, 2^138674353 is an apocalyptic number.

It is an amenable number.

138674353 is a deficient number, since it is larger than the sum of its proper divisors (1).

138674353 is an equidigital number, since it uses as much as digits as its factorization.

138674353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 40.

The square root of 138674353 is about 11776.0075152829. The cubic root of 138674353 is about 517.6053017608.

The spelling of 138674353 in words is "one hundred thirty-eight million, six hundred seventy-four thousand, three hundred fifty-three".