1032871787809 has 3 divisors (see below), whose sum is σ = 1032872804113. Its totient is φ = 1032870771506.

The previous prime is 1032871787789. The next prime is 1032871787867. The reversal of 1032871787809 is 9087871782301.

The square root of 1032871787809 is 1016303.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1032871787809 - 2¹¹ = 1032871785761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1032871787869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 508152 + ... + 1524454.

Almost surely, 2^{1032871787809} is an apocalyptic number.

1032871787809 is the 1016303-rd square number.

1032871787809 is the 508152-nd centered octagonal number.

It is an amenable number.

1032871787809 is a deficient number, since it is larger than the sum of its proper divisors (1016304).

1032871787809 is an frugal number, since it uses more digits than its factorization.

1032871787809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2032606 (or 1016303 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 61.

The spelling of 1032871787809 in words is "one trillion, thirty-two billion, eight hundred seventy-one million, seven hundred eighty-seven thousand, eight hundred nine".