881021093 has 2 divisors, whose sum is σ = 881021094. Its totient is φ = 881021092.

The previous prime is 881021083. The next prime is 881021137. The reversal of 881021093 is 390120188.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732351844 + 148669249 = 27062^2 + 12193^2 .

It is a cyclic number.

It is not a de Polignac number, because 881021093 - 2¹⁰ = 881020069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (881021033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440510546 + 440510547.

It is an arithmetic number, because the mean of its divisors is an integer number (440510547).

Almost surely, 2^881021093 is an apocalyptic number.

It is an amenable number.

881021093 is a deficient number, since it is larger than the sum of its proper divisors (1).

881021093 is an equidigital number, since it uses as much as digits as its factorization.

881021093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 881021093 is about 29681.9994777980. Note that the first 3 decimals coincide. The cubic root of 881021093 is about 958.6544709725.

The spelling of 881021093 in words is "eight hundred eighty-one million, twenty-one thousand, ninety-three".