19960511 has 2 divisors, whose sum is σ = 19960512. Its totient is φ = 19960510.

The previous prime is 19960459. The next prime is 19960513. The reversal of 19960511 is 11506991.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19960511 - 2¹⁰ = 19959487 is a prime.

It is a super-2 number, since 2×19960511² = 796843998762242, which contains 22 as substring.

Together with 19960513, 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 (19960513) 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, 9980255 + 9980256.

It is an arithmetic number, because the mean of its divisors is an integer number (9980256).

Almost surely, 2^19960511 is an apocalyptic number.

19960511 is a deficient number, since it is larger than the sum of its proper divisors (1).

19960511 is an equidigital number, since it uses as much as digits as its factorization.

19960511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2430, while the sum is 32.

The square root of 19960511 is about 4467.7187691259. The cubic root of 19960511 is about 271.2629945568.

The spelling of 19960511 in words is "nineteen million, nine hundred sixty thousand, five hundred eleven".