636225383 has 2 divisors, whose sum is σ = 636225384. Its totient is φ = 636225382.

The previous prime is 636225353. The next prime is 636225427. The reversal of 636225383 is 383522636.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 636225383 - 2²² = 632031079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (636225313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 318112691 + 318112692.

It is an arithmetic number, because the mean of its divisors is an integer number (318112692).

Almost surely, 2^636225383 is an apocalyptic number.

636225383 is a deficient number, since it is larger than the sum of its proper divisors (1).

636225383 is an equidigital number, since it uses as much as digits as its factorization.

636225383 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 38.

The square root of 636225383 is about 25223.5085386629. The cubic root of 636225383 is about 860.0763331380.

The spelling of 636225383 in words is "six hundred thirty-six million, two hundred twenty-five thousand, three hundred eighty-three".