3638407 has 2 divisors, whose sum is σ = 3638408. Its totient is φ = 3638406.

The previous prime is 3638351. The next prime is 3638413. The reversal of 3638407 is 7048363.

3638407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3638407 - 2⁷ = 3638279 is a prime.

3638407 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819203 + 1819204.

It is an arithmetic number, because the mean of its divisors is an integer number (1819204).

Almost surely, 2^3638407 is an apocalyptic number.

3638407 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638407 is an equidigital number, since it uses as much as digits as its factorization.

3638407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 3638407 is about 1907.4608777115. The cubic root of 3638407 is about 153.8049901345.

The spelling of 3638407 in words is "three million, six hundred thirty-eight thousand, four hundred seven".