285618323449 has 2 divisors, whose sum is σ = 285618323450. Its totient is φ = 285618323448.

The previous prime is 285618323407. The next prime is 285618323453. The reversal of 285618323449 is 944323816582.

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., 234612359424 + 51005964025 = 484368^2 + 225845^2 .

It is a cyclic number.

It is not a de Polignac number, because 285618323449 - 2⁷ = 285618323321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 285618323449.

It is not a weakly prime, because it can be changed into another prime (285618323489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142809161724 + 142809161725.

It is an arithmetic number, because the mean of its divisors is an integer number (142809161725).

Almost surely, 2^285618323449 is an apocalyptic number.

It is an amenable number.

285618323449 is a deficient number, since it is larger than the sum of its proper divisors (1).

285618323449 is an equidigital number, since it uses as much as digits as its factorization.

285618323449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9953280, while the sum is 55.

The spelling of 285618323449 in words is "two hundred eighty-five billion, six hundred eighteen million, three hundred twenty-three thousand, four hundred forty-nine".