1081856983 has 2 divisors, whose sum is σ = 1081856984. Its totient is φ = 1081856982.

The previous prime is 1081856959. The next prime is 1081856987. The reversal of 1081856983 is 3896581801.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1081856983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1081856987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540928491 + 540928492.

It is an arithmetic number, because the mean of its divisors is an integer number (540928492).

Almost surely, 2^1081856983 is an apocalyptic number.

1081856983 is a deficient number, since it is larger than the sum of its proper divisors (1).

1081856983 is an equidigital number, since it uses as much as digits as its factorization.

1081856983 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 49.

The square root of 1081856983 is about 32891.5944125547. The cubic root of 1081856983 is about 1026.5732676438.

The spelling of 1081856983 in words is "one billion, eighty-one million, eight hundred fifty-six thousand, nine hundred eighty-three".