718774549 has 2 divisors, whose sum is σ = 718774550. Its totient is φ = 718774548.

The previous prime is 718774531. The next prime is 718774583. The reversal of 718774549 is 945477817.

718774549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 696590449 + 22184100 = 26393^2 + 4710^2 .

It is a cyclic number.

It is not a de Polignac number, because 718774549 - 2⁵ = 718774517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 718774496 and 718774505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718774249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359387274 + 359387275.

It is an arithmetic number, because the mean of its divisors is an integer number (359387275).

Almost surely, 2^718774549 is an apocalyptic number.

It is an amenable number.

718774549 is a deficient number, since it is larger than the sum of its proper divisors (1).

718774549 is an equidigital number, since it uses as much as digits as its factorization.

718774549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1975680, while the sum is 52.

The square root of 718774549 is about 26809.9710742104. The cubic root of 718774549 is about 895.7721659268.

The spelling of 718774549 in words is "seven hundred eighteen million, seven hundred seventy-four thousand, five hundred forty-nine".