2051032806 has 64 divisors (see below), whose sum is σ = 4635532800. Its totient is φ = 672084000.

The previous prime is 2051032799. The next prime is 2051032807. The reversal of 2051032806 is 6082301502.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2051032806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2051032807) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1950981 + ... + 1952031.

It is an arithmetic number, because the mean of its divisors is an integer number (72430200).

Almost surely, 2^2051032806 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2051032806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2317766400).

2051032806 is an abundant number, since it is smaller than the sum of its proper divisors (2584499994).

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

2051032806 is a wasteful number, since it uses less digits than its factorization.

2051032806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1636 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 2051032806 is about 45288.3296887841. The cubic root of 2051032806 is about 1270.5473916995.

The spelling of 2051032806 in words is "two billion, fifty-one million, thirty-two thousand, eight hundred six".