718264489 has 4 divisors (see below), whose sum is σ = 743032260. Its totient is φ = 693496720.

The previous prime is 718264453. The next prime is 718264507. The reversal of 718264489 is 984462817.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 567392400 + 150872089 = 23820^2 + 12283^2 .

It is not a de Polignac number, because 718264489 - 2⁹ = 718263977 is a prime.

It is a super-2 number, since 2×718264489² = 1031807752316862242, which contains 22 as substring.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (718264409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12383842 + ... + 12383899.

It is an arithmetic number, because the mean of its divisors is an integer number (185758065).

Almost surely, 2^718264489 is an apocalyptic number.

It is an amenable number.

718264489 is a deficient number, since it is larger than the sum of its proper divisors (24767771).

718264489 is a wasteful number, since it uses less digits than its factorization.

718264489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24767770.

The product of its digits is 774144, while the sum is 49.

The square root of 718264489 is about 26800.4568804340. The cubic root of 718264489 is about 895.5602285076.

The spelling of 718264489 in words is "seven hundred eighteen million, two hundred sixty-four thousand, four hundred eighty-nine".