618197328 has 90 divisors (see below), whose sum is σ = 2012581194. Its totient is φ = 176625792.

The previous prime is 618197317. The next prime is 618197387. The reversal of 618197328 is 823791816.

618197328 is a `hidden beast` number, since 618 + 1 + 9 + 7 + 3 + 28 = 666.

It can be written as a sum of positive squares in only one way, i.e., 605750544 + 12446784 = 24612^2 + 3528^2 .

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

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 17 ways as a sum of consecutive naturals, for example, 36751 + ... + 50862.

Almost surely, 2^618197328 is an apocalyptic number.

It is an amenable number.

618197328 is an abundant number, since it is smaller than the sum of its proper divisors (1394383866).

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

618197328 is a wasteful number, since it uses less digits than its factorization.

618197328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87641 (or 87625 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 618197328 is about 24863.5743206804. The cubic root of 618197328 is about 851.8746757409.

The spelling of 618197328 in words is "six hundred eighteen million, one hundred ninety-seven thousand, three hundred twenty-eight".