1081964843 has 16 divisors (see below), whose sum is σ = 1132621056. Its totient is φ = 1032826080.

The previous prime is 1081964831. The next prime is 1081964887. The reversal of 1081964843 is 3484691801.

It is a cyclic number.

It is not a de Polignac number, because 1081964843 - 2¹⁰ = 1081963819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1081964794 and 1081964803.

It is not an unprimeable number, because it can be changed into a prime (1081964893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292898 + ... + 296568.

It is an arithmetic number, because the mean of its divisors is an integer number (70788816).

Almost surely, 2^1081964843 is an apocalyptic number.

1081964843 is a deficient number, since it is larger than the sum of its proper divisors (50656213).

1081964843 is an equidigital number, since it uses as much as digits as its factorization.

1081964843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3874.

The product of its (nonzero) digits is 165888, while the sum is 44.

The square root of 1081964843 is about 32893.2340003229. The cubic root of 1081964843 is about 1026.6073826007.

The spelling of 1081964843 in words is "one billion, eighty-one million, nine hundred sixty-four thousand, eight hundred forty-three".