1630503887 has 2 divisors, whose sum is σ = 1630503888. Its totient is φ = 1630503886.

The previous prime is 1630503883. The next prime is 1630503899. The reversal of 1630503887 is 7883050361.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1630503887 - 2² = 1630503883 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1630503883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815251943 + 815251944.

It is an arithmetic number, because the mean of its divisors is an integer number (815251944).

Almost surely, 2^1630503887 is an apocalyptic number.

1630503887 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630503887 is an equidigital number, since it uses as much as digits as its factorization.

1630503887 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1630503887 is about 40379.4983500291. The cubic root of 1630503887 is about 1176.9931794387.

The spelling of 1630503887 in words is "one billion, six hundred thirty million, five hundred three thousand, eight hundred eighty-seven".