718662149 has 2 divisors, whose sum is σ = 718662150. Its totient is φ = 718662148.

The previous prime is 718662089. The next prime is 718662157. The reversal of 718662149 is 941266817.

718662149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 708517924 + 10144225 = 26618^2 + 3185^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718662149 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718662169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359331074 + 359331075.

It is an arithmetic number, because the mean of its divisors is an integer number (359331075).

Almost surely, 2^718662149 is an apocalyptic number.

It is an amenable number.

718662149 is a deficient number, since it is larger than the sum of its proper divisors (1).

718662149 is an equidigital number, since it uses as much as digits as its factorization.

718662149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 44.

The square root of 718662149 is about 26807.8747572425. The cubic root of 718662149 is about 895.7254706915.

The spelling of 718662149 in words is "seven hundred eighteen million, six hundred sixty-two thousand, one hundred forty-nine".