818737461 has 6 divisors (see below), whose sum is σ = 1182620790. Its totient is φ = 545824968.

The previous prime is 818737457. The next prime is 818737499. The reversal of 818737461 is 164737818.

818737461 is a `hidden beast` number, since 8 + 187 + 3 + 7 + 461 = 666.

818737461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 799814961 + 18922500 = 28281^2 + 4350^2 .

It is not a de Polignac number, because 818737461 - 2² = 818737457 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818737441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45485406 + ... + 45485423.

It is an arithmetic number, because the mean of its divisors is an integer number (197103465).

Almost surely, 2^818737461 is an apocalyptic number.

It is an amenable number.

818737461 is a deficient number, since it is larger than the sum of its proper divisors (363883329).

818737461 is a wasteful number, since it uses less digits than its factorization.

818737461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90970835 (or 90970832 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 818737461 is about 28613.5887473068. The cubic root of 818737461 is about 935.5095399174.

The spelling of 818737461 in words is "eight hundred eighteen million, seven hundred thirty-seven thousand, four hundred sixty-one".