813016205 has 4 divisors (see below), whose sum is σ = 975619452. Its totient is φ = 650412960.

The previous prime is 813016153. The next prime is 813016223. The reversal of 813016205 is 502610318.

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 470803204 + 342213001 = 21698^2 + 18499^2 .

It is not a de Polignac number, because 813016205 - 2⁸ = 813015949 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, 81301616 + ... + 81301625.

It is an arithmetic number, because the mean of its divisors is an integer number (243904863).

Almost surely, 2^813016205 is an apocalyptic number.

It is an amenable number.

813016205 is a deficient number, since it is larger than the sum of its proper divisors (162603247).

813016205 is a wasteful number, since it uses less digits than its factorization.

813016205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162603246.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 813016205 is about 28513.4390244320. The cubic root of 813016205 is about 933.3253618225.

The spelling of 813016205 in words is "eight hundred thirteen million, sixteen thousand, two hundred five".