618204420 has 48 divisors (see below), whose sum is σ = 1923304320. Its totient is φ = 164854368.

The previous prime is 618204383. The next prime is 618204451. The reversal of 618204420 is 24402816.

618204420 is a `hidden beast` number, since 618 + 2 + 0 + 4 + 42 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 571872 + ... + 572951.

It is an arithmetic number, because the mean of its divisors is an integer number (40068840).

Almost surely, 2^618204420 is an apocalyptic number.

618204420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

618204420 is an abundant number, since it is smaller than the sum of its proper divisors (1305099900).

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

618204420 is a wasteful number, since it uses less digits than its factorization.

618204420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144841 (or 1144833 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 618204420 is about 24863.7169385432. The cubic root of 618204420 is about 851.8779333157.

The spelling of 618204420 in words is "six hundred eighteen million, two hundred four thousand, four hundred twenty".