1585228057 has 12 divisors (see below), whose sum is σ = 1924217856. Its totient is φ = 1299689160.

The previous prime is 1585228033. The next prime is 1585228091. The reversal of 1585228057 is 7508225851.

It is not a de Polignac number, because 1585228057 - 2⁷ = 1585227929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1585228157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 702169 + ... + 704422.

It is an arithmetic number, because the mean of its divisors is an integer number (160351488).

Almost surely, 2^1585228057 is an apocalyptic number.

It is an amenable number.

1585228057 is a deficient number, since it is larger than the sum of its proper divisors (338989799).

1585228057 is a wasteful number, since it uses less digits than its factorization.

1585228057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1406628 (or 1406621 counting only the distinct ones).

The product of its (nonzero) digits is 224000, while the sum is 43.

The square root of 1585228057 is about 39814.9225416803. The cubic root of 1585228057 is about 1165.9965088988.

The spelling of 1585228057 in words is "one billion, five hundred eighty-five million, two hundred twenty-eight thousand, fifty-seven".