1080971681 has 2 divisors, whose sum is σ = 1080971682. Its totient is φ = 1080971680.

The previous prime is 1080971677. The next prime is 1080971719. The reversal of 1080971681 is 1861790801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 710755600 + 370216081 = 26660^2 + 19241^2 .

It is a cyclic number.

It is not a de Polignac number, because 1080971681 - 2² = 1080971677 is a prime.

It is a super-2 number, since 2×1080971681² = 2336999550247931522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1080971081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540485840 + 540485841.

It is an arithmetic number, because the mean of its divisors is an integer number (540485841).

Almost surely, 2^1080971681 is an apocalyptic number.

It is an amenable number.

1080971681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1080971681 is an equidigital number, since it uses as much as digits as its factorization.

1080971681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 41.

The square root of 1080971681 is about 32878.1337821963. The cubic root of 1080971681 is about 1026.2931704292.

The spelling of 1080971681 in words is "one billion, eighty million, nine hundred seventy-one thousand, six hundred eighty-one".