3638825923 has 2 divisors, whose sum is σ = 3638825924. Its totient is φ = 3638825922.

The previous prime is 3638825917. The next prime is 3638825947. The reversal of 3638825923 is 3295288363.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3638825923 is a prime.

It is not a weakly prime, because it can be changed into another prime (3638825123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819412961 + 1819412962.

It is an arithmetic number, because the mean of its divisors is an integer number (1819412962).

Almost surely, 2^3638825923 is an apocalyptic number.

3638825923 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638825923 is an equidigital number, since it uses as much as digits as its factorization.

3638825923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1866240, while the sum is 49.

The square root of 3638825923 is about 60322.6816628704. The cubic root of 3638825923 is about 1538.1089289863.

The spelling of 3638825923 in words is "three billion, six hundred thirty-eight million, eight hundred twenty-five thousand, nine hundred twenty-three".