813016261 has 8 divisors (see below), whose sum is σ = 845653248. Its totient is φ = 780780000.

The previous prime is 813016249. The next prime is 813016271. The reversal of 813016261 is 162610318.

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

It is a cyclic number.

It is not a de Polignac number, because 813016261 - 2⁵ = 813016229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813016231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96040 + ... + 104161.

It is an arithmetic number, because the mean of its divisors is an integer number (105706656).

Almost surely, 2^813016261 is an apocalyptic number.

It is an amenable number.

813016261 is a deficient number, since it is larger than the sum of its proper divisors (32636987).

813016261 is a wasteful number, since it uses less digits than its factorization.

813016261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200363.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 813016261 is about 28513.4400064250. The cubic root of 813016261 is about 933.3253832514.

Adding to 813016261 its reverse (162610318), we get a palindrome (975626579).

It can be divided in two parts, 8130 and 16261, that multiplied together give a triangular number (132201930 = T₁₆₂₆₀).

The spelling of 813016261 in words is "eight hundred thirteen million, sixteen thousand, two hundred sixty-one".