451863983 has 2 divisors, whose sum is σ = 451863984. Its totient is φ = 451863982.

The previous prime is 451863917. The next prime is 451863989. The reversal of 451863983 is 389368154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451863983 - 2¹² = 451859887 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (451863989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225931991 + 225931992.

It is an arithmetic number, because the mean of its divisors is an integer number (225931992).

Almost surely, 2^451863983 is an apocalyptic number.

451863983 is a deficient number, since it is larger than the sum of its proper divisors (1).

451863983 is an equidigital number, since it uses as much as digits as its factorization.

451863983 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 451863983 is about 21257.0925340226. The cubic root of 451863983 is about 767.3660398495.

The spelling of 451863983 in words is "four hundred fifty-one million, eight hundred sixty-three thousand, nine hundred eighty-three".