19006890629 has 2 divisors, whose sum is σ = 19006890630. Its totient is φ = 19006890628.

The previous prime is 19006890611. The next prime is 19006890671. The reversal of 19006890629 is 92609860091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16750830625 + 2256060004 = 129425^2 + 47498^2 .

It is a cyclic number.

It is not a de Polignac number, because 19006890629 - 2⁸ = 19006890373 is a prime.

It is a super-2 number, since 2×19006890629² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19006890829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9503445314 + 9503445315.

It is an arithmetic number, because the mean of its divisors is an integer number (9503445315).

Almost surely, 2^19006890629 is an apocalyptic number.

It is an amenable number.

19006890629 is a deficient number, since it is larger than the sum of its proper divisors (1).

19006890629 is an equidigital number, since it uses as much as digits as its factorization.

19006890629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 50.

The spelling of 19006890629 in words is "nineteen billion, six million, eight hundred ninety thousand, six hundred twenty-nine".