285618325469 has 2 divisors, whose sum is σ = 285618325470. Its totient is φ = 285618325468.

The previous prime is 285618325387. The next prime is 285618325621. The reversal of 285618325469 is 964523816582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 272679262969 + 12939062500 = 522187^2 + 113750^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-285618325469 is a prime.

It is a super-2 number, since 2×285618325469² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (285618325169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142809162734 + 142809162735.

It is an arithmetic number, because the mean of its divisors is an integer number (142809162735).

Almost surely, 2^285618325469 is an apocalyptic number.

It is an amenable number.

285618325469 is a deficient number, since it is larger than the sum of its proper divisors (1).

285618325469 is an equidigital number, since it uses as much as digits as its factorization.

285618325469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24883200, while the sum is 59.

The spelling of 285618325469 in words is "two hundred eighty-five billion, six hundred eighteen million, three hundred twenty-five thousand, four hundred sixty-nine".