798231881 has 2 divisors, whose sum is σ = 798231882. Its totient is φ = 798231880.

The previous prime is 798231871. The next prime is 798231883. The reversal of 798231881 is 188132897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684084025 + 114147856 = 26155^2 + 10684^2 .

It is a cyclic number.

It is not a de Polignac number, because 798231881 - 2²⁶ = 731123017 is a prime.

It is a super-2 number, since 2×798231881² = 1274348271689596322, which contains 22 as substring.

Together with 798231883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (798231883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399115940 + 399115941.

It is an arithmetic number, because the mean of its divisors is an integer number (399115941).

Almost surely, 2^798231881 is an apocalyptic number.

It is an amenable number.

798231881 is a deficient number, since it is larger than the sum of its proper divisors (1).

798231881 is an equidigital number, since it uses as much as digits as its factorization.

798231881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 47.

The square root of 798231881 is about 28252.9977347537. The cubic root of 798231881 is about 927.6333554738.

The spelling of 798231881 in words is "seven hundred ninety-eight million, two hundred thirty-one thousand, eight hundred eighty-one".