618114640 has 160 divisors (see below), whose sum is σ = 1714390272. Its totient is φ = 204288000.

The previous prime is 618114619. The next prime is 618114643. The reversal of 618114640 is 46411816.

618114640 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618114643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 811860 + ... + 812620.

Almost surely, 2^618114640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618114640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (857195136).

618114640 is an abundant number, since it is smaller than the sum of its proper divisors (1096275632).

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

618114640 is a wasteful number, since it uses less digits than its factorization.

618114640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 618114640 is about 24861.9114309419. The cubic root of 618114640 is about 851.8366927480.

The spelling of 618114640 in words is "six hundred eighteen million, one hundred fourteen thousand, six hundred forty".