19114021 has 2 divisors, whose sum is σ = 19114022. Its totient is φ = 19114020.

The previous prime is 19114003. The next prime is 19114027. The reversal of 19114021 is 12041191.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17969121 + 1144900 = 4239^2 + 1070^2 .

It is an emirp because it is prime and its reverse (12041191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19114021 - 2⁷ = 19113893 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19114021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19114027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9557010 + 9557011.

It is an arithmetic number, because the mean of its divisors is an integer number (9557011).

Almost surely, 2^19114021 is an apocalyptic number.

It is an amenable number.

19114021 is a deficient number, since it is larger than the sum of its proper divisors (1).

19114021 is an equidigital number, since it uses as much as digits as its factorization.

19114021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 19114021 is about 4371.9584856217. The cubic root of 19114021 is about 267.3728793032.

The spelling of 19114021 in words is "nineteen million, one hundred fourteen thousand, twenty-one".