34185643 has 2 divisors, whose sum is σ = 34185644. Its totient is φ = 34185642.

The previous prime is 34185637. The next prime is 34185647. The reversal of 34185643 is 34658143.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34185643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 34185599 and 34185608.

It is not a weakly prime, because it can be changed into another prime (34185647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17092821 + 17092822.

It is an arithmetic number, because the mean of its divisors is an integer number (17092822).

Almost surely, 2^34185643 is an apocalyptic number.

34185643 is a deficient number, since it is larger than the sum of its proper divisors (1).

34185643 is an equidigital number, since it uses as much as digits as its factorization.

34185643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 34.

The square root of 34185643 is about 5846.8489804338. The cubic root of 34185643 is about 324.5497291235.

The spelling of 34185643 in words is "thirty-four million, one hundred eighty-five thousand, six hundred forty-three".