34918781 has 2 divisors, whose sum is σ = 34918782. Its totient is φ = 34918780.

The previous prime is 34918759. The next prime is 34918801. The reversal of 34918781 is 18781943.

34918781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34916281 + 2500 = 5909^2 + 50^2 .

It is a cyclic number.

It is not a de Polignac number, because 34918781 - 2⁶ = 34918717 is a prime.

It is a super-2 number, since 2×34918781² = 2438642533051922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34918721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17459390 + 17459391.

It is an arithmetic number, because the mean of its divisors is an integer number (17459391).

Almost surely, 2^34918781 is an apocalyptic number.

It is an amenable number.

34918781 is a deficient number, since it is larger than the sum of its proper divisors (1).

34918781 is an equidigital number, since it uses as much as digits as its factorization.

34918781 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 41.

The square root of 34918781 is about 5909.2115379296. The cubic root of 34918781 is about 326.8534133982.

The spelling of 34918781 in words is "thirty-four million, nine hundred eighteen thousand, seven hundred eighty-one".