873918841 has 2 divisors, whose sum is σ = 873918842. Its totient is φ = 873918840.

The previous prime is 873918839. The next prime is 873918853. The reversal of 873918841 is 148819378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 693795600 + 180123241 = 26340^2 + 13421^2 .

It is a cyclic number.

It is not a de Polignac number, because 873918841 - 2¹ = 873918839 is a prime.

Together with 873918839, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (873918821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436959420 + 436959421.

It is an arithmetic number, because the mean of its divisors is an integer number (436959421).

Almost surely, 2^873918841 is an apocalyptic number.

It is an amenable number.

873918841 is a deficient number, since it is larger than the sum of its proper divisors (1).

873918841 is an equidigital number, since it uses as much as digits as its factorization.

873918841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 49.

The square root of 873918841 is about 29562.1183442594. The cubic root of 873918841 is about 956.0714894486.

The spelling of 873918841 in words is "eight hundred seventy-three million, nine hundred eighteen thousand, eight hundred forty-one".