2881812001 has 4 divisors (see below), whose sum is σ = 3051330372. Its totient is φ = 2712293632.

The previous prime is 2881811981. The next prime is 2881812013. The reversal of 2881812001 is 1002181882.

It is a happy number.

2881812001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 838681600 + 2043130401 = 28960^2 + 45201^2 .

It is a cyclic number.

It is not a de Polignac number, because 2881812001 - 2⁷ = 2881811873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2882812001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84759160 + ... + 84759193.

It is an arithmetic number, because the mean of its divisors is an integer number (762832593).

Almost surely, 2^2881812001 is an apocalyptic number.

It is an amenable number.

2881812001 is a deficient number, since it is larger than the sum of its proper divisors (169518371).

2881812001 is a wasteful number, since it uses less digits than its factorization.

2881812001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169518370.

The product of its (nonzero) digits is 2048, while the sum is 31.

The square root of 2881812001 is about 53682.5111279269. The cubic root of 2881812001 is about 1423.0556432320.

Adding to 2881812001 its reverse (1002181882), we get a palindrome (3883993883).

The spelling of 2881812001 in words is "two billion, eight hundred eighty-one million, eight hundred twelve thousand, one".