618755478 has 16 divisors (see below), whose sum is σ = 1350012096. Its totient is φ = 187501640.

The previous prime is 618755471. The next prime is 618755503. The reversal of 618755478 is 874557816.

It is a happy number.

618755478 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 618755478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618755471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4687476 + ... + 4687607.

It is an arithmetic number, because the mean of its divisors is an integer number (84375756).

Almost surely, 2^618755478 is an apocalyptic number.

618755478 is an abundant number, since it is smaller than the sum of its proper divisors (731256618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618755478 is a wasteful number, since it uses less digits than its factorization.

618755478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9375099.

The product of its digits is 1881600, while the sum is 51.

The square root of 618755478 is about 24874.7960393648. The cubic root of 618755478 is about 852.1309751477.

The spelling of 618755478 in words is "six hundred eighteen million, seven hundred fifty-five thousand, four hundred seventy-eight".