285909330338 has 4 divisors (see below), whose sum is σ = 428863995510. Its totient is φ = 142954665168.

The previous prime is 285909330269. The next prime is 285909330361. The reversal of 285909330338 is 833033909582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 239818822369 + 46090507969 = 489713^2 + 214687^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 285909330338.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 71477332583 + ... + 71477332586.

Almost surely, 2^285909330338 is an apocalyptic number.

285909330338 is a deficient number, since it is larger than the sum of its proper divisors (142954665172).

285909330338 is a wasteful number, since it uses less digits than its factorization.

285909330338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142954665171.

The product of its (nonzero) digits is 4199040, while the sum is 53.

The spelling of 285909330338 in words is "two hundred eighty-five billion, nine hundred nine million, three hundred thirty thousand, three hundred thirty-eight".