618519040 has 80 divisors (see below), whose sum is σ = 1489717152. Its totient is φ = 246288384.

The previous prime is 618519019. The next prime is 618519043. The reversal of 618519040 is 40915816.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 618518987 and 618519005.

It is not an unprimeable number, because it can be changed into a prime (618519043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785527 + ... + 786313.

Almost surely, 2^618519040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618519040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (744858576).

618519040 is an abundant number, since it is smaller than the sum of its proper divisors (871198112).

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

618519040 is an equidigital number, since it uses as much as digits as its factorization.

618519040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117 (or 1101 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 618519040 is about 24870.0430236861. The cubic root of 618519040 is about 852.0224229443.

The spelling of 618519040 in words is "six hundred eighteen million, five hundred nineteen thousand, forty".