718418 has 4 divisors (see below), whose sum is σ = 1077630. Its totient is φ = 359208.

The previous prime is 718411. The next prime is 718423. The reversal of 718418 is 814817.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 814817 = 571 ⋅1427.

It can be written as a sum of positive squares in only one way, i.e., 444889 + 273529 = 667^2 + 523^2 .

It is a super-2 number, since 2×718418² = 1032248845448, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (718411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 179603 + ... + 179606.

2⁷¹⁸⁴¹⁸ is an apocalyptic number.

718418 is a deficient number, since it is larger than the sum of its proper divisors (359212).

718418 is a wasteful number, since it uses less digits than its factorization.

718418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359211.

The product of its digits is 1792, while the sum is 29.

The square root of 718418 is about 847.5954223567. The cubic root of 718418 is about 89.5624025134.

The spelling of 718418 in words is "seven hundred eighteen thousand, four hundred eighteen".