348818681 has 2 divisors, whose sum is σ = 348818682. Its totient is φ = 348818680.

The previous prime is 348818677. The next prime is 348818737. The reversal of 348818681 is 186818843.

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., 324720400 + 24098281 = 18020^2 + 4909^2 .

It is a cyclic number.

It is not a de Polignac number, because 348818681 - 2² = 348818677 is a prime.

It is a super-2 number, since 2×348818681² = 243348944429159522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (348817681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174409340 + 174409341.

It is an arithmetic number, because the mean of its divisors is an integer number (174409341).

Almost surely, 2^348818681 is an apocalyptic number.

It is an amenable number.

348818681 is a deficient number, since it is larger than the sum of its proper divisors (1).

348818681 is an equidigital number, since it uses as much as digits as its factorization.

348818681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294912, while the sum is 47.

The square root of 348818681 is about 18676.6881700156. The cubic root of 348818681 is about 703.9361120839.

The spelling of 348818681 in words is "three hundred forty-eight million, eight hundred eighteen thousand, six hundred eighty-one".