19793129 has 2 divisors, whose sum is σ = 19793130. Its totient is φ = 19793128.

The previous prime is 19793101. The next prime is 19793131. The reversal of 19793129 is 92139791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19669225 + 123904 = 4435^2 + 352^2 .

It is an emirp because it is prime and its reverse (92139791) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19793129 is a prime.

It is a super-2 number, since 2×19793129² = 783535911221282, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 19793131, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (19793149) 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, 9896564 + 9896565.

It is an arithmetic number, because the mean of its divisors is an integer number (9896565).

Almost surely, 2^19793129 is an apocalyptic number.

It is an amenable number.

19793129 is a deficient number, since it is larger than the sum of its proper divisors (1).

19793129 is an equidigital number, since it uses as much as digits as its factorization.

19793129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30618, while the sum is 41.

The square root of 19793129 is about 4448.9469540555. The cubic root of 19793129 is about 270.5026257001.

The spelling of 19793129 in words is "nineteen million, seven hundred ninety-three thousand, one hundred twenty-nine".