3340434781 has 2 divisors, whose sum is σ = 3340434782. Its totient is φ = 3340434780.

The previous prime is 3340434761. The next prime is 3340434787. The reversal of 3340434781 is 1874340433.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2890782756 + 449652025 = 53766^2 + 21205^2 .

It is a cyclic number.

It is not a de Polignac number, because 3340434781 - 2⁹ = 3340434269 is a prime.

It is a super-2 number, since 2×3340434781² = 22317009052229035922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3340434781.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3340434787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1670217390 + 1670217391.

It is an arithmetic number, because the mean of its divisors is an integer number (1670217391).

Almost surely, 2^3340434781 is an apocalyptic number.

It is an amenable number.

3340434781 is a deficient number, since it is larger than the sum of its proper divisors (1).

3340434781 is an equidigital number, since it uses as much as digits as its factorization.

3340434781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 3340434781 is about 57796.4945390289. The cubic root of 3340434781 is about 1494.8616451196.

The spelling of 3340434781 in words is "three billion, three hundred forty million, four hundred thirty-four thousand, seven hundred eighty-one".