19983011 has 2 divisors, whose sum is σ = 19983012. Its totient is φ = 19983010.

The previous prime is 19982987. The next prime is 19983043. The reversal of 19983011 is 11038991.

It is an a-pointer prime, because the next prime (19983043) can be obtained adding 19983011 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (11038991) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19983011 is a prime.

It is a super-2 number, since 2×19983011² = 798641457252242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19983091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9991505 + 9991506.

It is an arithmetic number, because the mean of its divisors is an integer number (9991506).

Almost surely, 2^19983011 is an apocalyptic number.

19983011 is a deficient number, since it is larger than the sum of its proper divisors (1).

19983011 is an equidigital number, since it uses as much as digits as its factorization.

19983011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 19983011 is about 4470.2361235174. The cubic root of 19983011 is about 271.3648811519.

The spelling of 19983011 in words is "nineteen million, nine hundred eighty-three thousand, eleven".