19685948 has 6 divisors (see below), whose sum is σ = 34450416. Its totient is φ = 9842972.

The previous prime is 19685947. The next prime is 19685951. The reversal of 19685948 is 84958691.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 19685896 and 19685905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19685947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2460740 + ... + 2460747.

It is an arithmetic number, because the mean of its divisors is an integer number (5741736).

Almost surely, 2^19685948 is an apocalyptic number.

It is an amenable number.

19685948 is a deficient number, since it is larger than the sum of its proper divisors (14764468).

19685948 is a wasteful number, since it uses less digits than its factorization.

19685948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4921491 (or 4921489 counting only the distinct ones).

The product of its digits is 622080, while the sum is 50.

The square root of 19685948 is about 4436.8849432907. The cubic root of 19685948 is about 270.0134789796.

The spelling of 19685948 in words is "nineteen million, six hundred eighty-five thousand, nine hundred forty-eight".