348145909 has 2 divisors, whose sum is σ = 348145910. Its totient is φ = 348145908.

The previous prime is 348145879. The next prime is 348145927. The reversal of 348145909 is 909541843.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 300051684 + 48094225 = 17322^2 + 6935^2 .

It is a cyclic number.

It is not a de Polignac number, because 348145909 - 2¹³ = 348137717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (348145939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174072954 + 174072955.

It is an arithmetic number, because the mean of its divisors is an integer number (174072955).

Almost surely, 2^348145909 is an apocalyptic number.

It is an amenable number.

348145909 is a deficient number, since it is larger than the sum of its proper divisors (1).

348145909 is an equidigital number, since it uses as much as digits as its factorization.

348145909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 348145909 is about 18658.6684680338. The cubic root of 348145909 is about 703.4832566503.

The spelling of 348145909 in words is "three hundred forty-eight million, one hundred forty-five thousand, nine hundred nine".