818925304061 has 2 divisors, whose sum is σ = 818925304062. Its totient is φ = 818925304060.

The previous prime is 818925304051. The next prime is 818925304063. The reversal of 818925304061 is 160403529818.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501724305625 + 317200998436 = 708325^2 + 563206^2 .

It is a cyclic number.

It is not a de Polignac number, because 818925304061 - 2⁶ = 818925303997 is a prime.

Together with 818925304063, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 818925303997 and 818925304015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (818925304063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 409462652030 + 409462652031.

It is an arithmetic number, because the mean of its divisors is an integer number (409462652031).

Almost surely, 2^818925304061 is an apocalyptic number.

It is an amenable number.

818925304061 is a deficient number, since it is larger than the sum of its proper divisors (1).

818925304061 is an equidigital number, since it uses as much as digits as its factorization.

818925304061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 47.

The spelling of 818925304061 in words is "eight hundred eighteen billion, nine hundred twenty-five million, three hundred four thousand, sixty-one".