2140636523 has 2 divisors, whose sum is σ = 2140636524. Its totient is φ = 2140636522.

The previous prime is 2140636513. The next prime is 2140636571. The reversal of 2140636523 is 3256360412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2140636523 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2140636523.

It is not a weakly prime, because it can be changed into another prime (2140636513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1070318261 + 1070318262.

It is an arithmetic number, because the mean of its divisors is an integer number (1070318262).

Almost surely, 2^2140636523 is an apocalyptic number.

2140636523 is a deficient number, since it is larger than the sum of its proper divisors (1).

2140636523 is an equidigital number, since it uses as much as digits as its factorization.

2140636523 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 2140636523 is about 46267.0133356369. The cubic root of 2140636523 is about 1288.7864963763.

Adding to 2140636523 its reverse (3256360412), we get a palindrome (5396996935).

The spelling of 2140636523 in words is "two billion, one hundred forty million, six hundred thirty-six thousand, five hundred twenty-three".