1571327985 has 16 divisors (see below), whose sum is σ = 2520467136. Its totient is φ = 835927488.

The previous prime is 1571327983. The next prime is 1571327999. The reversal of 1571327985 is 5897231751.

It is not a de Polignac number, because 1571327985 - 2¹ = 1571327983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1571327983) 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, 125979 + ... + 137888.

It is an arithmetic number, because the mean of its divisors is an integer number (157529196).

Almost surely, 2^1571327985 is an apocalyptic number.

1571327985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1571327985 is a deficient number, since it is larger than the sum of its proper divisors (949139151).

1571327985 is a wasteful number, since it uses less digits than its factorization.

1571327985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264272.

The product of its digits is 529200, while the sum is 48.

The square root of 1571327985 is about 39639.9796291572. The cubic root of 1571327985 is about 1162.5784856248.

The spelling of 1571327985 in words is "one billion, five hundred seventy-one million, three hundred twenty-seven thousand, nine hundred eighty-five".