19016969 has 2 divisors, whose sum is σ = 19016970. Its totient is φ = 19016968.

The previous prime is 19016951. The next prime is 19016971. The reversal of 19016969 is 96961091.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12866569 + 6150400 = 3587^2 + 2480^2 .

It is a cyclic number.

It is not a de Polignac number, because 19016969 - 2⁸ = 19016713 is a prime.

It is a super-2 number, since 2×19016969² = 723290219893922, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 19016971, 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 (19016909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9508484 + 9508485.

It is an arithmetic number, because the mean of its divisors is an integer number (9508485).

Almost surely, 2^19016969 is an apocalyptic number.

It is an amenable number.

19016969 is a deficient number, since it is larger than the sum of its proper divisors (1).

19016969 is an equidigital number, since it uses as much as digits as its factorization.

19016969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 19016969 is about 4360.8449869263. The cubic root of 19016969 is about 266.9195800201.

The spelling of 19016969 in words is "nineteen million, sixteen thousand, nine hundred sixty-nine".