34185218939 has 2 divisors, whose sum is σ = 34185218940. Its totient is φ = 34185218938.

The previous prime is 34185218929. The next prime is 34185218957. The reversal of 34185218939 is 93981258143.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34185218939 is a prime.

It is not a weakly prime, because it can be changed into another prime (34185218929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17092609469 + 17092609470.

It is an arithmetic number, because the mean of its divisors is an integer number (17092609470).

Almost surely, 2^34185218939 is an apocalyptic number.

34185218939 is a deficient number, since it is larger than the sum of its proper divisors (1).

34185218939 is an equidigital number, since it uses as much as digits as its factorization.

34185218939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 53.

The spelling of 34185218939 in words is "thirty-four billion, one hundred eighty-five million, two hundred eighteen thousand, nine hundred thirty-nine".