19648069 has 8 divisors (see below), whose sum is σ = 22913600. Its totient is φ = 16840908.

The previous prime is 19648063. The next prime is 19648081. The reversal of 19648069 is 96084691.

It is not a de Polignac number, because 19648069 - 2⁵ = 19648037 is a prime.

It is a super-2 number, since 2×19648069² = 772093230857522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19648063) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 28299 + ... + 28984.

It is an arithmetic number, because the mean of its divisors is an integer number (2864200).

Almost surely, 2^19648069 is an apocalyptic number.

It is an amenable number.

19648069 is a deficient number, since it is larger than the sum of its proper divisors (3265531).

19648069 is an frugal number, since it uses more digits than its factorization.

19648069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57304 (or 57290 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 19648069 is about 4432.6142399266. The cubic root of 19648069 is about 269.8401843431.

The spelling of 19648069 in words is "nineteen million, six hundred forty-eight thousand, sixty-nine".