718345949 has 2 divisors, whose sum is σ = 718345950. Its totient is φ = 718345948.

The previous prime is 718345907. The next prime is 718345951. The reversal of 718345949 is 949543817.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 581292100 + 137053849 = 24110^2 + 11707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718345949 is a prime.

Together with 718345951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 718345897 and 718345906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718345049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359172974 + 359172975.

It is an arithmetic number, because the mean of its divisors is an integer number (359172975).

Almost surely, 2^718345949 is an apocalyptic number.

It is an amenable number.

718345949 is a deficient number, since it is larger than the sum of its proper divisors (1).

718345949 is an equidigital number, since it uses as much as digits as its factorization.

718345949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 718345949 is about 26801.9765875579. The cubic root of 718345949 is about 895.5940830647.

The spelling of 718345949 in words is "seven hundred eighteen million, three hundred forty-five thousand, nine hundred forty-nine".