19648473 has 16 divisors (see below), whose sum is σ = 28296576. Its totient is φ = 12055680.

The previous prime is 19648459. The next prime is 19648501. The reversal of 19648473 is 37484691.

It is not a de Polignac number, because 19648473 - 2⁸ = 19648217 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19640473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19836 + ... + 20802.

It is an arithmetic number, because the mean of its divisors is an integer number (1768536).

Almost surely, 2^19648473 is an apocalyptic number.

19648473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19648473 is a deficient number, since it is larger than the sum of its proper divisors (8648103).

19648473 is a wasteful number, since it uses less digits than its factorization.

19648473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1504.

The product of its digits is 145152, while the sum is 42.

The square root of 19648473 is about 4432.6598109938. The cubic root of 19648473 is about 269.8420337986.

The spelling of 19648473 in words is "nineteen million, six hundred forty-eight thousand, four hundred seventy-three".