34194173987 has 2 divisors, whose sum is σ = 34194173988. Its totient is φ = 34194173986.

The previous prime is 34194173957. The next prime is 34194174103. The reversal of 34194173987 is 78937149143.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34194173987 - 2¹⁴ = 34194157603 is a prime.

It is not a weakly prime, because it can be changed into another prime (34194173957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17097086993 + 17097086994.

It is an arithmetic number, because the mean of its divisors is an integer number (17097086994).

Almost surely, 2^34194173987 is an apocalyptic number.

34194173987 is a deficient number, since it is larger than the sum of its proper divisors (1).

34194173987 is an equidigital number, since it uses as much as digits as its factorization.

34194173987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4572288, while the sum is 56.

The spelling of 34194173987 in words is "thirty-four billion, one hundred ninety-four million, one hundred seventy-three thousand, nine hundred eighty-seven".