618531056 has 40 divisors (see below), whose sum is σ = 1407920304. Its totient is φ = 259522560.

The previous prime is 618531037. The next prime is 618531059. The reversal of 618531056 is 650135816.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618531059) 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, 132881 + ... + 137456.

Almost surely, 2^618531056 is an apocalyptic number.

It is an amenable number.

618531056 is an abundant number, since it is smaller than the sum of its proper divisors (789389248).

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

618531056 is a wasteful number, since it uses less digits than its factorization.

618531056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270369 (or 270363 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 618531056 is about 24870.2845982912. The cubic root of 618531056 is about 852.0279403358.

The spelling of 618531056 in words is "six hundred eighteen million, five hundred thirty-one thousand, fifty-six".