19948693 has 2 divisors, whose sum is σ = 19948694. Its totient is φ = 19948692.

The previous prime is 19948679. The next prime is 19948699. The reversal of 19948693 is 39684991.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16826404 + 3122289 = 4102^2 + 1767^2 .

It is a cyclic number.

It is not a de Polignac number, because 19948693 - 2¹⁷ = 19817621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19948699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9974346 + 9974347.

It is an arithmetic number, because the mean of its divisors is an integer number (9974347).

Almost surely, 2^19948693 is an apocalyptic number.

It is an amenable number.

19948693 is a deficient number, since it is larger than the sum of its proper divisors (1).

19948693 is an equidigital number, since it uses as much as digits as its factorization.

19948693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 49.

The square root of 19948693 is about 4466.3959743847. The cubic root of 19948693 is about 271.2094485168.

The spelling of 19948693 in words is "nineteen million, nine hundred forty-eight thousand, six hundred ninety-three".