19485365 has 4 divisors (see below), whose sum is σ = 23382444. Its totient is φ = 15588288.

The previous prime is 19485359. The next prime is 19485377. The reversal of 19485365 is 56358491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56358491 = 7 ⋅8051213.

It can be written as a sum of positive squares in 2 ways, for example, as 2502724 + 16982641 = 1582^2 + 4121^2 .

It is a cyclic number.

It is not a de Polignac number, because 19485365 - 2²⁴ = 2708149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1948532 + ... + 1948541.

It is an arithmetic number, because the mean of its divisors is an integer number (5845611).

Almost surely, 2^19485365 is an apocalyptic number.

It is an amenable number.

19485365 is a deficient number, since it is larger than the sum of its proper divisors (3897079).

19485365 is an equidigital number, since it uses as much as digits as its factorization.

19485365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897078.

The product of its digits is 129600, while the sum is 41.

The square root of 19485365 is about 4414.2230346914. The cubic root of 19485365 is about 269.0932775838.

The spelling of 19485365 in words is "nineteen million, four hundred eighty-five thousand, three hundred sixty-five".