1806057216 has 144 divisors (see below), whose sum is σ = 5471951520. Its totient is φ = 587243520.

The previous prime is 1806057199. The next prime is 1806057299. The reversal of 1806057216 is 6127506081.

1806057216 is a `hidden beast` number, since 1 + 80 + 6 + 0 + 572 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280206 + ... + 286578.

Almost surely, 2^1806057216 is an apocalyptic number.

1806057216 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 1806057216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2735975760).

1806057216 is an abundant number, since it is smaller than the sum of its proper divisors (3665894304).

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

1806057216 is an equidigital number, since it uses as much as digits as its factorization.

1806057216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6439 (or 6419 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 1806057216 is about 42497.7318924199. The cubic root of 1806057216 is about 1217.8033607182.

The spelling of 1806057216 in words is "one billion, eight hundred six million, fifty-seven thousand, two hundred sixteen".