2140636515 has 32 divisors (see below), whose sum is σ = 3634523136. Its totient is φ = 1072135680.

The previous prime is 2140636513. The next prime is 2140636523. The reversal of 2140636515 is 5156360412.

It is not a de Polignac number, because 2140636515 - 2¹ = 2140636513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2140636513) by changing a digit.

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, 109000 + ... + 127130.

It is an arithmetic number, because the mean of its divisors is an integer number (113578848).

Almost surely, 2^2140636515 is an apocalyptic number.

2140636515 is a deficient number, since it is larger than the sum of its proper divisors (1493886621).

2140636515 is a wasteful number, since it uses less digits than its factorization.

2140636515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18619.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 2140636515 is about 46267.0132491822. The cubic root of 2140636515 is about 1288.7864947709.

Adding to 2140636515 its reverse (5156360412), we get a palindrome (7296996927).

The spelling of 2140636515 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, five hundred fifteen".