1081839143 has 16 divisors (see below), whose sum is σ = 1349525760. Its totient is φ = 842529600.

The previous prime is 1081839139. The next prime is 1081839211. The reversal of 1081839143 is 3419381801.

It is not a de Polignac number, because 1081839143 - 2² = 1081839139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1081839097 and 1081839106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081839103) 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, 226403 + ... + 231131.

It is an arithmetic number, because the mean of its divisors is an integer number (84345360).

Almost surely, 2^1081839143 is an apocalyptic number.

1081839143 is a deficient number, since it is larger than the sum of its proper divisors (267686617).

1081839143 is a wasteful number, since it uses less digits than its factorization.

1081839143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7718.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 1081839143 is about 32891.3232175296. The cubic root of 1081839143 is about 1026.5676248253.

The spelling of 1081839143 in words is "one billion, eighty-one million, eight hundred thirty-nine thousand, one hundred forty-three".