1075985643 has 4 divisors (see below), whose sum is σ = 1434647528. Its totient is φ = 717323760.

The previous prime is 1075985627. The next prime is 1075985653. The reversal of 1075985643 is 3465895701.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1075985643 - 2⁴ = 1075985627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1075985592 and 1075985601.

It is not an unprimeable number, because it can be changed into a prime (1075985653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179330938 + ... + 179330943.

It is an arithmetic number, because the mean of its divisors is an integer number (358661882).

Almost surely, 2^1075985643 is an apocalyptic number.

1075985643 is a deficient number, since it is larger than the sum of its proper divisors (358661885).

1075985643 is an equidigital number, since it uses as much as digits as its factorization.

1075985643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358661884.

The product of its (nonzero) digits is 907200, while the sum is 48.

The square root of 1075985643 is about 32802.2200925486. The cubic root of 1075985643 is about 1024.7127945671.

The spelling of 1075985643 in words is "one billion, seventy-five million, nine hundred eighty-five thousand, six hundred forty-three".