418493790549 has 12 divisors (see below), whose sum is σ = 640049326956. Its totient is φ = 262584339072.

The previous prime is 418493790499. The next prime is 418493790619. The reversal of 418493790549 is 945097394814.

418493790549 is a `hidden beast` number, since 4 + 1 + 8 + 493 + 7 + 90 + 54 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 311749139025 + 106744651524 = 558345^2 + 326718^2 .

It is not a de Polignac number, because 418493790549 - 2²³ = 418485401941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418493790349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1367626614 + ... + 1367626919.

It is an arithmetic number, because the mean of its divisors is an integer number (53337443913).

Almost surely, 2^418493790549 is an apocalyptic number.

It is an amenable number.

418493790549 is a deficient number, since it is larger than the sum of its proper divisors (221555536407).

418493790549 is a wasteful number, since it uses less digits than its factorization.

418493790549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2735253556 (or 2735253553 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 418493790549 in words is "four hundred eighteen billion, four hundred ninety-three million, seven hundred ninety thousand, five hundred forty-nine".