19451065229 has 2 divisors, whose sum is σ = 19451065230. Its totient is φ = 19451065228.

The previous prime is 19451065217. The next prime is 19451065241. The reversal of 19451065229 is 92256015491.

It is a balanced prime because it is at equal distance from previous prime (19451065217) and next prime (19451065241).

It can be written as a sum of positive squares in only one way, i.e., 17128789129 + 2322276100 = 130877^2 + 48190^2 .

It is a cyclic number.

It is not a de Polignac number, because 19451065229 - 2⁴ = 19451065213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 19451065229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19451065259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9725532614 + 9725532615.

It is an arithmetic number, because the mean of its divisors is an integer number (9725532615).

Almost surely, 2^19451065229 is an apocalyptic number.

It is an amenable number.

19451065229 is a deficient number, since it is larger than the sum of its proper divisors (1).

19451065229 is an equidigital number, since it uses as much as digits as its factorization.

19451065229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 19451065229 in words is "nineteen billion, four hundred fifty-one million, sixty-five thousand, two hundred twenty-nine".