1585745745 has 16 divisors (see below), whose sum is σ = 2537932992. Its totient is φ = 845484480.

The previous prime is 1585745731. The next prime is 1585745747. The reversal of 1585745745 is 5475475851.

It is not a de Polignac number, because 1585745745 - 2⁸ = 1585745489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1585745747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45519 + ... + 72411.

It is an arithmetic number, because the mean of its divisors is an integer number (158620812).

Almost surely, 2^1585745745 is an apocalyptic number.

1585745745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1585745745 is a deficient number, since it is larger than the sum of its proper divisors (952187247).

1585745745 is a wasteful number, since it uses less digits than its factorization.

1585745745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30832.

The product of its digits is 3920000, while the sum is 51.

The square root of 1585745745 is about 39821.4231915435. The cubic root of 1585745745 is about 1166.1234215958.

The spelling of 1585745745 in words is "one billion, five hundred eighty-five million, seven hundred forty-five thousand, seven hundred forty-five".