19693345 has 16 divisors (see below), whose sum is σ = 27561600. Its totient is φ = 13502832.

The previous prime is 19693337. The next prime is 19693363. The reversal of 19693345 is 54339691.

It is not a de Polignac number, because 19693345 - 2³ = 19693337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19693298 and 19693307.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4027 + ... + 7456.

It is an arithmetic number, because the mean of its divisors is an integer number (1722600).

Almost surely, 2^19693345 is an apocalyptic number.

It is an amenable number.

19693345 is a deficient number, since it is larger than the sum of its proper divisors (7868255).

19693345 is an equidigital number, since it uses as much as digits as its factorization.

19693345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11509 (or 11495 counting only the distinct ones).

The product of its digits is 87480, while the sum is 40.

The square root of 19693345 is about 4437.7184453275. The cubic root of 19693345 is about 270.0472939559.

The spelling of 19693345 in words is "nineteen million, six hundred ninety-three thousand, three hundred forty-five".