1630440827 has 2 divisors, whose sum is σ = 1630440828. Its totient is φ = 1630440826.

The previous prime is 1630440821. The next prime is 1630440829. The reversal of 1630440827 is 7280440361.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1630440827 - 2²⁶ = 1563331963 is a prime.

Together with 1630440829, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1630440821) 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, 815220413 + 815220414.

It is an arithmetic number, because the mean of its divisors is an integer number (815220414).

Almost surely, 2^1630440827 is an apocalyptic number.

1630440827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630440827 is an equidigital number, since it uses as much as digits as its factorization.

1630440827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 1630440827 is about 40378.7175006835. The cubic root of 1630440827 is about 1176.9780057762.

The spelling of 1630440827 in words is "one billion, six hundred thirty million, four hundred forty thousand, eight hundred twenty-seven".