19882631 has 2 divisors, whose sum is σ = 19882632. Its totient is φ = 19882630.

The previous prime is 19882613. The next prime is 19882693. The reversal of 19882631 is 13628891.

Together with previous prime (19882613) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is an emirp because it is prime and its reverse (13628891) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19882631 - 2¹⁰ = 19881607 is a prime.

It is a super-2 number, since 2×19882631² = 790638030964322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19882601) 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, 9941315 + 9941316.

It is an arithmetic number, because the mean of its divisors is an integer number (9941316).

Almost surely, 2^19882631 is an apocalyptic number.

19882631 is a deficient number, since it is larger than the sum of its proper divisors (1).

19882631 is an equidigital number, since it uses as much as digits as its factorization.

19882631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 38.

The square root of 19882631 is about 4458.9943933582. The cubic root of 19882631 is about 270.9097387797.

The spelling of 19882631 in words is "nineteen million, eight hundred eighty-two thousand, six hundred thirty-one".