618445095840 has 1920 divisors, whose sum is σ = 2733039429120. Its totient is φ = 129591705600.

The previous prime is 618445095809. The next prime is 618445095859. The reversal of 618445095840 is 48590544816.

618445095840 is a `hidden beast` number, since 6 + 1 + 8 + 4 + 4 + 50 + 9 + 584 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 1988569285 + ... + 1988569595.

It is an arithmetic number, because the mean of its divisors is an integer number (1423458036).

Almost surely, 2^618445095840 is an apocalyptic number.

618445095840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 618445095840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1366519714560).

618445095840 is an abundant number, since it is smaller than the sum of its proper divisors (2114594333280).

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

618445095840 is a wasteful number, since it uses less digits than its factorization.

618445095840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 411 counting only the distinct ones).

The product of its (nonzero) digits is 5529600, while the sum is 54.

The spelling of 618445095840 in words is "six hundred eighteen billion, four hundred forty-five million, ninety-five thousand, eight hundred forty".