19530065 has 8 divisors (see below), whose sum is σ = 23820648. Its totient is φ = 15367680.

The previous prime is 19530047. The next prime is 19530073. The reversal of 19530065 is 56003591.

It can be written as a sum of positive squares in 4 ways, for example, as 1948816 + 17581249 = 1396^2 + 4193^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19530065 - 2⁶ = 19530001 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31712 + ... + 32321.

It is an arithmetic number, because the mean of its divisors is an integer number (2977581).

Almost surely, 2^19530065 is an apocalyptic number.

It is an amenable number.

19530065 is a deficient number, since it is larger than the sum of its proper divisors (4290583).

19530065 is an equidigital number, since it uses as much as digits as its factorization.

19530065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64099.

The product of its (nonzero) digits is 4050, while the sum is 29.

The square root of 19530065 is about 4419.2833129366. The cubic root of 19530065 is about 269.2988897329.

The spelling of 19530065 in words is "nineteen million, five hundred thirty thousand, sixty-five".