2051040290 has 32 divisors (see below), whose sum is σ = 4104124416. Its totient is φ = 732876480.

The previous prime is 2051040263. The next prime is 2051040311. The reversal of 2051040290 is 920401502.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 250442 + ... + 258501.

It is an arithmetic number, because the mean of its divisors is an integer number (128253888).

Almost surely, 2^2051040290 is an apocalyptic number.

2051040290 is an abundant number, since it is smaller than the sum of its proper divisors (2053084126).

2051040290 is a wasteful number, since it uses less digits than its factorization.

2051040290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508994.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2051040290 is about 45288.4123148516. The cubic root of 2051040290 is about 1270.5489370616.

Adding to 2051040290 its reverse (920401502), we get a palindrome (2971441792).

The spelling of 2051040290 in words is "two billion, fifty-one million, forty thousand, two hundred ninety".