810419473 has 4 divisors (see below), whose sum is σ = 832322740. Its totient is φ = 788516208.

The previous prime is 810419447. The next prime is 810419503. The reversal of 810419473 is 374914018.

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 777963664 + 32455809 = 27892^2 + 5697^2 .

It is a cyclic number.

It is not a de Polignac number, because 810419473 - 2²¹ = 808322321 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 21903229 = 810419473 / (8 + 1 + 0 + 4 + 1 + 9 + 4 + 7 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (810419273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10951578 + ... + 10951651.

It is an arithmetic number, because the mean of its divisors is an integer number (208080685).

Almost surely, 2^810419473 is an apocalyptic number.

It is an amenable number.

810419473 is a deficient number, since it is larger than the sum of its proper divisors (21903267).

810419473 is a wasteful number, since it uses less digits than its factorization.

810419473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21903266.

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 810419473 is about 28467.8673770973. The cubic root of 810419473 is about 932.3306376145.

The spelling of 810419473 in words is "eight hundred ten million, four hundred nineteen thousand, four hundred seventy-three".