718433381 has 2 divisors, whose sum is σ = 718433382. Its totient is φ = 718433380.

The previous prime is 718433371. The next prime is 718433389. The reversal of 718433381 is 183334817.

718433381 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., 460317025 + 258116356 = 21455^2 + 16066^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-718433381 is a prime.

It is a super-2 number, since 2×718433381² = 1032293045870182322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (718433389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 359216690 + 359216691.

It is an arithmetic number, because the mean of its divisors is an integer number (359216691).

Almost surely, 2^718433381 is an apocalyptic number.

It is an amenable number.

718433381 is a deficient number, since it is larger than the sum of its proper divisors (1).

718433381 is an equidigital number, since it uses as much as digits as its factorization.

718433381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 38.

The square root of 718433381 is about 26803.6076116630. The cubic root of 718433381 is about 895.6304167214.

The spelling of 718433381 in words is "seven hundred eighteen million, four hundred thirty-three thousand, three hundred eighty-one".