618133384 has 128 divisors (see below), whose sum is σ = 1393459200. Its totient is φ = 254016000.

The previous prime is 618133381. The next prime is 618133393. The reversal of 618133384 is 483331816.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (618133381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4867129 + ... + 4867255.

It is an arithmetic number, because the mean of its divisors is an integer number (10886400).

Almost surely, 2^618133384 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 618133384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (696729600).

618133384 is an abundant number, since it is smaller than the sum of its proper divisors (775325816).

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

618133384 is a wasteful number, since it uses less digits than its factorization.

618133384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275 (or 271 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 618133384 is about 24862.2883902508. The cubic root of 618133384 is about 851.8453031603.

The spelling of 618133384 in words is "six hundred eighteen million, one hundred thirty-three thousand, three hundred eighty-four".