718733849 has 2 divisors, whose sum is σ = 718733850. Its totient is φ = 718733848.

The previous prime is 718733801. The next prime is 718733887. The reversal of 718733849 is 948337817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664608400 + 54125449 = 25780^2 + 7357^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718733849 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 718733797 and 718733806.

It is not a weakly prime, because it can be changed into another prime (718733549) 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, 359366924 + 359366925.

It is an arithmetic number, because the mean of its divisors is an integer number (359366925).

Almost surely, 2^718733849 is an apocalyptic number.

It is an amenable number.

718733849 is a deficient number, since it is larger than the sum of its proper divisors (1).

718733849 is an equidigital number, since it uses as much as digits as its factorization.

718733849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 50.

The square root of 718733849 is about 26809.2120175137. The cubic root of 718733849 is about 895.7552581610.

The spelling of 718733849 in words is "seven hundred eighteen million, seven hundred thirty-three thousand, eight hundred forty-nine".