618233856 has 128 divisors (see below), whose sum is σ = 1740609600. Its totient is φ = 194641920.

The previous prime is 618233843. The next prime is 618233867. The reversal of 618233856 is 658332816.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1867611 + ... + 1867941.

Almost surely, 2^618233856 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 618233856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870304800).

618233856 is an abundant number, since it is smaller than the sum of its proper divisors (1122375744).

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

618233856 is an equidigital number, since it uses as much as digits as its factorization.

618233856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383 (or 355 counting only the distinct ones).

The product of its digits is 207360, while the sum is 42.

The square root of 618233856 is about 24864.3088783903. The cubic root of 618233856 is about 851.8914539139.

The spelling of 618233856 in words is "six hundred eighteen million, two hundred thirty-three thousand, eight hundred fifty-six".