19674304477 has 2 divisors, whose sum is σ = 19674304478. Its totient is φ = 19674304476.

The previous prime is 19674304469. The next prime is 19674304487. The reversal of 19674304477 is 77440347691.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15872472196 + 3801832281 = 125986^2 + 61659^2 .

It is a cyclic number.

It is not a de Polignac number, because 19674304477 - 2³ = 19674304469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19674304417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9837152238 + 9837152239.

It is an arithmetic number, because the mean of its divisors is an integer number (9837152239).

Almost surely, 2^19674304477 is an apocalyptic number.

It is an amenable number.

19674304477 is a deficient number, since it is larger than the sum of its proper divisors (1).

19674304477 is an equidigital number, since it uses as much as digits as its factorization.

19674304477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 52.

The spelling of 19674304477 in words is "nineteen billion, six hundred seventy-four million, three hundred four thousand, four hundred seventy-seven".