797181881 has 2 divisors, whose sum is σ = 797181882. Its totient is φ = 797181880.

The previous prime is 797181829. The next prime is 797181911. The reversal of 797181881 is 188181797.

797181881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 701455225 + 95726656 = 26485^2 + 9784^2 .

It is a cyclic number.

It is not a de Polignac number, because 797181881 - 2¹⁸ = 796919737 is a prime.

It is a super-2 number, since 2×797181881² = 1270997902789396322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (797181821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398590940 + 398590941.

It is an arithmetic number, because the mean of its divisors is an integer number (398590941).

Almost surely, 2^797181881 is an apocalyptic number.

It is an amenable number.

797181881 is a deficient number, since it is larger than the sum of its proper divisors (1).

797181881 is an equidigital number, since it uses as much as digits as its factorization.

797181881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 50.

The square root of 797181881 is about 28234.4095210082. The cubic root of 797181881 is about 927.2264384554.

The spelling of 797181881 in words is "seven hundred ninety-seven million, one hundred eighty-one thousand, eight hundred eighty-one".