3638140459 has 2 divisors, whose sum is σ = 3638140460. Its totient is φ = 3638140458.

The previous prime is 3638140417. The next prime is 3638140507. The reversal of 3638140459 is 9540418363.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3638140459 - 2¹⁷ = 3638009387 is a prime.

It is not a weakly prime, because it can be changed into another prime (3638140409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819070229 + 1819070230.

It is an arithmetic number, because the mean of its divisors is an integer number (1819070230).

Almost surely, 2^3638140459 is an apocalyptic number.

3638140459 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638140459 is an equidigital number, since it uses as much as digits as its factorization.

3638140459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 43.

The square root of 3638140459 is about 60316.9997513139. Note that the first 3 decimals coincide. The cubic root of 3638140459 is about 1538.0123424746.

The spelling of 3638140459 in words is "three billion, six hundred thirty-eight million, one hundred forty thousand, four hundred fifty-nine".