1043059817809 has 3 divisors (see below), whose sum is σ = 1043060839113. Its totient is φ = 1043058796506.

The previous prime is 1043059817791. The next prime is 1043059817827. The reversal of 1043059817809 is 9087189503401.

It is a happy number.

The square root of 1043059817809 is 1021303.

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 an interprime number because it is at equal distance from previous prime (1043059817791) and next prime (1043059817827).

It is not a de Polignac number, because 1043059817809 - 2³⁹ = 493304003921 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1043059817809.

It is not an unprimeable number, because it can be changed into a prime (1043059818809) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 510652 + ... + 1531954.

It is an arithmetic number, because the mean of its divisors is an integer number (347686946371).

Almost surely, 2^{1043059817809} is an apocalyptic number.

1043059817809 is the 1021303-rd square number.

1043059817809 is the 510652-nd centered octagonal number.

It is an amenable number.

1043059817809 is a deficient number, since it is larger than the sum of its proper divisors (1021304).

1043059817809 is an frugal number, since it uses more digits than its factorization.

1043059817809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042606 (or 1021303 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 1043059817809 in words is "one trillion, forty-three billion, fifty-nine million, eight hundred seventeen thousand, eight hundred nine".