19628692801 has 2 divisors, whose sum is σ = 19628692802. Its totient is φ = 19628692800.

The previous prime is 19628692751. The next prime is 19628692823. The reversal of 19628692801 is 10829682691.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18261468225 + 1367224576 = 135135^2 + 36976^2 .

It is an emirp because it is prime and its reverse (10829682691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19628692801 - 2³¹ = 17481209153 is a prime.

It is not a weakly prime, because it can be changed into another prime (19628692841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9814346400 + 9814346401.

It is an arithmetic number, because the mean of its divisors is an integer number (9814346401).

Almost surely, 2^19628692801 is an apocalyptic number.

It is an amenable number.

19628692801 is a deficient number, since it is larger than the sum of its proper divisors (1).

19628692801 is an equidigital number, since it uses as much as digits as its factorization.

19628692801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 19628692801 in words is "nineteen billion, six hundred twenty-eight million, six hundred ninety-two thousand, eight hundred one".