618939320 has 32 divisors (see below), whose sum is σ = 1399921920. Its totient is φ = 246276480.

The previous prime is 618939319. The next prime is 618939329. The reversal of 618939320 is 23939816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618939329) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32867 + ... + 48146.

It is an arithmetic number, because the mean of its divisors is an integer number (43747560).

Almost surely, 2^618939320 is an apocalyptic number.

It is an amenable number.

618939320 is an abundant number, since it is smaller than the sum of its proper divisors (780982600).

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

618939320 is a wasteful number, since it uses less digits than its factorization.

618939320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81215 (or 81211 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 618939320 is about 24878.4911118018. The cubic root of 618939320 is about 852.2153606364.

The spelling of 618939320 in words is "six hundred eighteen million, nine hundred thirty-nine thousand, three hundred twenty".