2040398815 has 32 divisors (see below), whose sum is σ = 3025411200. Its totient is φ = 1286406144.

The previous prime is 2040398779. The next prime is 2040398861. The reversal of 2040398815 is 5188930402.

It is a cyclic number.

It is not a de Polignac number, because 2040398815 - 2¹¹ = 2040396767 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108211 + ... + 125659.

It is an arithmetic number, because the mean of its divisors is an integer number (94544100).

Almost surely, 2^2040398815 is an apocalyptic number.

2040398815 is a deficient number, since it is larger than the sum of its proper divisors (985012385).

2040398815 is a wasteful number, since it uses less digits than its factorization.

2040398815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17731.

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 2040398815 is about 45170.7739030449. The cubic root of 2040398815 is about 1268.3477832673.

The spelling of 2040398815 in words is "two billion, forty million, three hundred ninety-eight thousand, eight hundred fifteen".