418242878089 has 9 divisors (see below), whose sum is σ = 420010007053. Its totient is φ = 416483161132.

The previous prime is 418242878069. The next prime is 418242878117. The reversal of 418242878089 is 980878242814.

The square root of 418242878089 is 646717.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 418242878089 - 2¹⁹ = 418242353801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (418242878069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 170085342 + ... + 170087800.

Almost surely, 2^418242878089 is an apocalyptic number.

418242878089 is the 646717-th square number.

418242878089 is the 323359-th centered octagonal number.

It is an amenable number.

418242878089 is a deficient number, since it is larger than the sum of its proper divisors (1767128964).

418242878089 is an frugal number, since it uses more digits than its factorization.

418242878089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5444 (or 2722 counting only the distinct ones).

The product of its (nonzero) digits is 16515072, while the sum is 61.

The spelling of 418242878089 in words is "four hundred eighteen billion, two hundred forty-two million, eight hundred seventy-eight thousand, eighty-nine".