3638140523 has 2 divisors, whose sum is σ = 3638140524. Its totient is φ = 3638140522.

The previous prime is 3638140507. The next prime is 3638140537. The reversal of 3638140523 is 3250418363.

It is a strong prime.

It is an emirp because it is prime and its reverse (3250418363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3638140523 - 2⁴ = 3638140507 is a prime.

It is not a weakly prime, because it can be changed into another prime (3638140543) 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 as a sum of consecutive naturals, namely, 1819070261 + 1819070262.

It is an arithmetic number, because the mean of its divisors is an integer number (1819070262).

Almost surely, 2^3638140523 is an apocalyptic number.

3638140523 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638140523 is an equidigital number, since it uses as much as digits as its factorization.

3638140523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 3638140523 is about 60317.0002818443. Note that the first 3 decimals coincide. The cubic root of 3638140523 is about 1538.0123514932.

Adding to 3638140523 its reverse (3250418363), we get a palindrome (6888558886).

The spelling of 3638140523 in words is "three billion, six hundred thirty-eight million, one hundred forty thousand, five hundred twenty-three".