19828693 has 2 divisors, whose sum is σ = 19828694. Its totient is φ = 19828692.

The previous prime is 19828657. The next prime is 19828703. The reversal of 19828693 is 39682891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19421649 + 407044 = 4407^2 + 638^2 .

It is a cyclic number.

It is not a de Polignac number, because 19828693 - 2¹⁷ = 19697621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19828493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9914346 + 9914347.

It is an arithmetic number, because the mean of its divisors is an integer number (9914347).

Almost surely, 2^19828693 is an apocalyptic number.

It is an amenable number.

19828693 is a deficient number, since it is larger than the sum of its proper divisors (1).

19828693 is an equidigital number, since it uses as much as digits as its factorization.

19828693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 19828693 is about 4452.9420611546. The cubic root of 19828693 is about 270.6645404626.

The spelling of 19828693 in words is "nineteen million, eight hundred twenty-eight thousand, six hundred ninety-three".