2801806512 has 20 divisors (see below), whose sum is σ = 7238000280. Its totient is φ = 933935488.

The previous prime is 2801806489. The next prime is 2801806517. The reversal of 2801806512 is 2156081082.

It is a super-2 number, since 2×2801806512² = 15700239461371212288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2801806517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29185437 + ... + 29185532.

It is an arithmetic number, because the mean of its divisors is an integer number (361900014).

Almost surely, 2^2801806512 is an apocalyptic number.

It is an amenable number.

2801806512 is an abundant number, since it is smaller than the sum of its proper divisors (4436193768).

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

2801806512 is a wasteful number, since it uses less digits than its factorization.

2801806512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58370980 (or 58370974 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 2801806512 is about 52932.0934027741. The cubic root of 2801806512 is about 1409.7628010025.

Adding to 2801806512 its reverse (2156081082), we get a palindrome (4957887594).

The spelling of 2801806512 in words is "two billion, eight hundred one million, eight hundred six thousand, five hundred twelve".