618206340 has 192 divisors, whose sum is σ = 1885685760. Its totient is φ = 150958080.

The previous prime is 618206333. The next prime is 618206341. The reversal of 618206340 is 43602816.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 618206298 and 618206307.

It is not an unprimeable number, because it can be changed into a prime (618206341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3937542 + ... + 3937698.

It is an arithmetic number, because the mean of its divisors is an integer number (9821280).

Almost surely, 2^618206340 is an apocalyptic number.

618206340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618206340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (942842880).

618206340 is an abundant number, since it is smaller than the sum of its proper divisors (1267479420).

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

618206340 is a wasteful number, since it uses less digits than its factorization.

618206340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 300 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 618206340 is about 24863.7555489914. The cubic root of 618206340 is about 851.8788152267.

The spelling of 618206340 in words is "six hundred eighteen million, two hundred six thousand, three hundred forty".