1093970681 has 2 divisors, whose sum is σ = 1093970682. Its totient is φ = 1093970680.

The previous prime is 1093970671. The next prime is 1093970701. The reversal of 1093970681 is 1860793901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 998244025 + 95726656 = 31595^2 + 9784^2 .

It is an emirp because it is prime and its reverse (1860793901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1093970681 - 2¹⁸ = 1093708537 is a prime.

It is a super-2 number, since 2×1093970681² = 2393543701775207522, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1093970641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546985340 + 546985341.

It is an arithmetic number, because the mean of its divisors is an integer number (546985341).

Almost surely, 2^1093970681 is an apocalyptic number.

It is an amenable number.

1093970681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1093970681 is an equidigital number, since it uses as much as digits as its factorization.

1093970681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 1093970681 is about 33075.2276031473. The cubic root of 1093970681 is about 1030.3906147198.

The spelling of 1093970681 in words is "one billion, ninety-three million, nine hundred seventy thousand, six hundred eighty-one".