285590841649 has 3 divisors (see below), whose sum is σ = 285591376057. Its totient is φ = 285590307242.

The previous prime is 285590841647. The next prime is 285590841661. The reversal of 285590841649 is 946148095582.

The square root of 285590841649 is 534407.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 285590841649 - 2¹ = 285590841647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (285590841647) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 267204 + ... + 801610.

Almost surely, 2^285590841649 is an apocalyptic number.

285590841649 is the 534407-th square number.

285590841649 is the 267204-th centered octagonal number.

It is an amenable number.

285590841649 is a deficient number, since it is larger than the sum of its proper divisors (534408).

285590841649 is an frugal number, since it uses more digits than its factorization.

285590841649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068814 (or 534407 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 61.

The spelling of 285590841649 in words is "two hundred eighty-five billion, five hundred ninety million, eight hundred forty-one thousand, six hundred forty-nine".