1811054688 has 96 divisors (see below), whose sum is σ = 4942135296. Its totient is φ = 580197888.

The previous prime is 1811054683. The next prime is 1811054719. The reversal of 1811054688 is 8864501181.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811054683) 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 15 ways as a sum of consecutive naturals, for example, 291745 + ... + 297887.

It is an arithmetic number, because the mean of its divisors is an integer number (51480576).

Almost surely, 2^1811054688 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 1811054688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2471067648).

1811054688 is an abundant number, since it is smaller than the sum of its proper divisors (3131080608).

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

1811054688 is a wasteful number, since it uses less digits than its factorization.

1811054688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6276 (or 6268 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 42.

The square root of 1811054688 is about 42556.4882009782. The cubic root of 1811054688 is about 1218.9255720131.

The spelling of 1811054688 in words is "one billion, eight hundred eleven million, fifty-four thousand, six hundred eighty-eight".