1818061056 has 432 divisors, whose sum is σ = 6696144000. Its totient is φ = 461832192.

The previous prime is 1818061001. The next prime is 1818061057. The reversal of 1818061056 is 6501608181.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1818061056.

It is not an unprimeable number, because it can be changed into a prime (1818061057) 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 47 ways as a sum of consecutive naturals, for example, 5209170 + ... + 5209518.

Almost surely, 2^1818061056 is an apocalyptic number.

1818061056 is a gapful number since it is divisible by the number (16) 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 1818061056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3348072000).

1818061056 is an abundant number, since it is smaller than the sum of its proper divisors (4878082944).

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

1818061056 is a wasteful number, since it uses less digits than its factorization.

1818061056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 36.

The square root of 1818061056 is about 42638.7271855059. The cubic root of 1818061056 is about 1220.4954218306.

The spelling of 1818061056 in words is "one billion, eight hundred eighteen million, sixty-one thousand, fifty-six".