19648345 has 16 divisors (see below), whose sum is σ = 25159680. Its totient is φ = 14678784.

The previous prime is 19648339. The next prime is 19648381. The reversal of 19648345 is 54384691.

It is a cyclic number.

It is not a de Polignac number, because 19648345 - 2⁷ = 19648217 is a prime.

It is a super-2 number, since 2×19648345² = 772114922478050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 19648298 and 19648307.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10984 + ... + 12646.

It is an arithmetic number, because the mean of its divisors is an integer number (1572480).

Almost surely, 2^19648345 is an apocalyptic number.

It is an amenable number.

19648345 is a deficient number, since it is larger than the sum of its proper divisors (5511335).

19648345 is a wasteful number, since it uses less digits than its factorization.

19648345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824.

The product of its digits is 103680, while the sum is 40.

The square root of 19648345 is about 4432.6453726866. The cubic root of 19648345 is about 269.8414478352.

The spelling of 19648345 in words is "nineteen million, six hundred forty-eight thousand, three hundred forty-five".