618306380 has 24 divisors (see below), whose sum is σ = 1305179232. Its totient is φ = 246039552.

The previous prime is 618306323. The next prime is 618306397. The reversal of 618306380 is 83603816.

It is a happy number.

618306380 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 618306380.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76232 + ... + 83951.

It is an arithmetic number, because the mean of its divisors is an integer number (54382468).

Almost surely, 2^618306380 is an apocalyptic number.

It is an amenable number.

618306380 is an abundant number, since it is smaller than the sum of its proper divisors (686872852).

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

618306380 is a wasteful number, since it uses less digits than its factorization.

618306380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160385 (or 160383 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 618306380 is about 24865.7672312760. The cubic root of 618306380 is about 851.9247639414.

The spelling of 618306380 in words is "six hundred eighteen million, three hundred six thousand, three hundred eighty".