818776461 has 8 divisors (see below), whose sum is σ = 1105521280. Its totient is φ = 538941312.

The previous prime is 818776429. The next prime is 818776463. The reversal of 818776461 is 164677818.

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

It is not a de Polignac number, because 818776461 - 2⁵ = 818776429 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 818776461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818776463) 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, 1727140 + ... + 1727613.

It is an arithmetic number, because the mean of its divisors is an integer number (138190160).

Almost surely, 2^818776461 is an apocalyptic number.

It is an amenable number.

818776461 is a deficient number, since it is larger than the sum of its proper divisors (286744819).

818776461 is a wasteful number, since it uses less digits than its factorization.

818776461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3454835.

The product of its digits is 451584, while the sum is 48.

The square root of 818776461 is about 28614.2702335740. The cubic root of 818776461 is about 935.5243938010.

It can be divided in two parts, 8187 and 76461, that added together give a palindrome (84648).

The spelling of 818776461 in words is "eight hundred eighteen million, seven hundred seventy-six thousand, four hundred sixty-one".