1052843681 has 4 divisors (see below), whose sum is σ = 1053295764. Its totient is φ = 1052391600.

The previous prime is 1052843657. The next prime is 1052843689. The reversal of 1052843681 is 1863482501.

1052843681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 923248225 + 129595456 = 30385^2 + 11384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1052843681 is a prime.

It is a super-2 number, since 2×1052843681² = 2216959633243259522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1052843689) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222530 + ... + 227211.

It is an arithmetic number, because the mean of its divisors is an integer number (263323941).

Almost surely, 2^1052843681 is an apocalyptic number.

It is an amenable number.

1052843681 is a deficient number, since it is larger than the sum of its proper divisors (452083).

1052843681 is an equidigital number, since it uses as much as digits as its factorization.

1052843681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452082.

The product of its (nonzero) digits is 46080, while the sum is 38.

The square root of 1052843681 is about 32447.5527736685. The cubic root of 1052843681 is about 1017.3130875087.

The spelling of 1052843681 in words is "one billion, fifty-two million, eight hundred forty-three thousand, six hundred eighty-one".