19669141 has 2 divisors, whose sum is σ = 19669142. Its totient is φ = 19669140.

The previous prime is 19669129. The next prime is 19669147. The reversal of 19669141 is 14196691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15046641 + 4622500 = 3879^2 + 2150^2 .

It is an emirp because it is prime and its reverse (14196691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19669141 - 2¹⁵ = 19636373 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19669141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19669147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9834570 + 9834571.

It is an arithmetic number, because the mean of its divisors is an integer number (9834571).

Almost surely, 2^19669141 is an apocalyptic number.

It is an amenable number.

19669141 is a deficient number, since it is larger than the sum of its proper divisors (1).

19669141 is an equidigital number, since it uses as much as digits as its factorization.

19669141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11664, while the sum is 37.

The square root of 19669141 is about 4434.9905298659. The cubic root of 19669141 is about 269.9366152079.

The spelling of 19669141 in words is "nineteen million, six hundred sixty-nine thousand, one hundred forty-one".