348644137 has 2 divisors, whose sum is σ = 348644138. Its totient is φ = 348644136.

The previous prime is 348644117. The next prime is 348644141. The reversal of 348644137 is 731446843.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 323604121 + 25040016 = 17989^2 + 5004^2 .

It is an emirp because it is prime and its reverse (731446843) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-348644137 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 348644137.

It is not a weakly prime, because it can be changed into another prime (348644117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174322068 + 174322069.

It is an arithmetic number, because the mean of its divisors is an integer number (174322069).

Almost surely, 2^348644137 is an apocalyptic number.

It is an amenable number.

348644137 is a deficient number, since it is larger than the sum of its proper divisors (1).

348644137 is an equidigital number, since it uses as much as digits as its factorization.

348644137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 40.

The square root of 348644137 is about 18672.0148082632. The cubic root of 348644137 is about 703.8186792256.

The spelling of 348644137 in words is "three hundred forty-eight million, six hundred forty-four thousand, one hundred thirty-seven".