718477889 has 2 divisors, whose sum is σ = 718477890. Its totient is φ = 718477888.

The previous prime is 718477873. The next prime is 718477901. The reversal of 718477889 is 988774817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 361570225 + 356907664 = 19015^2 + 18892^2 .

It is a cyclic number.

It is not a de Polignac number, because 718477889 - 2⁴ = 718477873 is a prime.

It is not a weakly prime, because it can be changed into another prime (718477189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359238944 + 359238945.

It is an arithmetic number, because the mean of its divisors is an integer number (359238945).

Almost surely, 2^718477889 is an apocalyptic number.

It is an amenable number.

718477889 is a deficient number, since it is larger than the sum of its proper divisors (1).

718477889 is an equidigital number, since it uses as much as digits as its factorization.

718477889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6322176, while the sum is 59.

The square root of 718477889 is about 26804.4378601753. The cubic root of 718477889 is about 895.6489115447.

The spelling of 718477889 in words is "seven hundred eighteen million, four hundred seventy-seven thousand, eight hundred eighty-nine".