19480805 has 4 divisors (see below), whose sum is σ = 23376972. Its totient is φ = 15584640.

The previous prime is 19480789. The next prime is 19480817. The reversal of 19480805 is 50808491.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13300609 + 6180196 = 3647^2 + 2486^2 .

It is not a de Polignac number, because 19480805 - 2⁴ = 19480789 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, 1948076 + ... + 1948085.

It is an arithmetic number, because the mean of its divisors is an integer number (5844243).

Almost surely, 2^19480805 is an apocalyptic number.

It is an amenable number.

19480805 is a deficient number, since it is larger than the sum of its proper divisors (3896167).

19480805 is an equidigital number, since it uses as much as digits as its factorization.

19480805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3896166.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 19480805 is about 4413.7064922806. The cubic root of 19480805 is about 269.0722847159.

The spelling of 19480805 in words is "nineteen million, four hundred eighty thousand, eight hundred five".