383630561 has 2 divisors, whose sum is σ = 383630562. Its totient is φ = 383630560.

The previous prime is 383630521. The next prime is 383630573. The reversal of 383630561 is 165036383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 336502336 + 47128225 = 18344^2 + 6865^2 .

It is a cyclic number.

It is not a de Polignac number, because 383630561 - 2¹⁰ = 383629537 is a prime.

It is a Sophie Germain prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (383630521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191815280 + 191815281.

It is an arithmetic number, because the mean of its divisors is an integer number (191815281).

Almost surely, 2^383630561 is an apocalyptic number.

It is an amenable number.

383630561 is a deficient number, since it is larger than the sum of its proper divisors (1).

383630561 is an equidigital number, since it uses as much as digits as its factorization.

383630561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 383630561 is about 19586.4892464168. The cubic root of 383630561 is about 726.6150667800.

The spelling of 383630561 in words is "three hundred eighty-three million, six hundred thirty thousand, five hundred sixty-one".