618832420 has 24 divisors (see below), whose sum is σ = 1300018104. Its totient is φ = 247443456.

The previous prime is 618832387. The next prime is 618832433. The reversal of 618832420 is 24238816.

It can be written as a sum of positive squares in 4 ways, for example, as 22202944 + 596629476 = 4712^2 + 24426^2 .

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 7 ways as a sum of consecutive naturals, for example, 96762 + ... + 102958.

It is an arithmetic number, because the mean of its divisors is an integer number (54167421).

Almost surely, 2^618832420 is an apocalyptic number.

It is an amenable number.

618832420 is an abundant number, since it is smaller than the sum of its proper divisors (681185684).

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

618832420 is a wasteful number, since it uses less digits than its factorization.

618832420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11199 (or 11197 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 618832420 is about 24876.3425768339. The cubic root of 618832420 is about 852.1662944008.

The spelling of 618832420 in words is "six hundred eighteen million, eight hundred thirty-two thousand, four hundred twenty".