881818193 has 2 divisors, whose sum is σ = 881818194. Its totient is φ = 881818192.

The previous prime is 881818181. The next prime is 881818199. The reversal of 881818193 is 391818188.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 843786304 + 38031889 = 29048^2 + 6167^2 .

It is a cyclic number.

It is not a de Polignac number, because 881818193 - 2¹⁶ = 881752657 is a prime.

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 (881818199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 440909096 + 440909097.

It is an arithmetic number, because the mean of its divisors is an integer number (440909097).

Almost surely, 2^881818193 is an apocalyptic number.

It is an amenable number.

881818193 is a deficient number, since it is larger than the sum of its proper divisors (1).

881818193 is an equidigital number, since it uses as much as digits as its factorization.

881818193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592, while the sum is 47.

The square root of 881818193 is about 29695.4237720225. The cubic root of 881818193 is about 958.9434966454.

The spelling of 881818193 in words is "eight hundred eighty-one million, eight hundred eighteen thousand, one hundred ninety-three".