19938029 has 2 divisors, whose sum is σ = 19938030. Its totient is φ = 19938028.

The previous prime is 19938001. The next prime is 19938031. The reversal of 19938029 is 92083991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17682025 + 2256004 = 4205^2 + 1502^2 .

It is a cyclic number.

It is not a de Polignac number, because 19938029 - 2⁸ = 19937773 is a prime.

Together with 19938031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19931029) 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, 9969014 + 9969015.

It is an arithmetic number, because the mean of its divisors is an integer number (9969015).

Almost surely, 2^19938029 is an apocalyptic number.

It is an amenable number.

19938029 is a deficient number, since it is larger than the sum of its proper divisors (1).

19938029 is an equidigital number, since it uses as much as digits as its factorization.

19938029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 41.

The square root of 19938029 is about 4465.2020111077. The cubic root of 19938029 is about 271.1611129681.

The spelling of 19938029 in words is "nineteen million, nine hundred thirty-eight thousand, twenty-nine".