1075781985 has 16 divisors (see below), whose sum is σ = 1763233920. Its totient is φ = 559756160.

The previous prime is 1075781977. The next prime is 1075782011. The reversal of 1075781985 is 5891875701.

It is not a de Polignac number, because 1075781985 - 2³ = 1075781977 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 874005 + ... + 875234.

It is an arithmetic number, because the mean of its divisors is an integer number (110202120).

Almost surely, 2^1075781985 is an apocalyptic number.

1075781985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1075781985 is a deficient number, since it is larger than the sum of its proper divisors (687451935).

1075781985 is a wasteful number, since it uses less digits than its factorization.

1075781985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749288.

The product of its (nonzero) digits is 705600, while the sum is 51.

The square root of 1075781985 is about 32799.1156130771. The cubic root of 1075781985 is about 1024.6481393902.

The spelling of 1075781985 in words is "one billion, seventy-five million, seven hundred eighty-one thousand, nine hundred eighty-five".