1630994411 has 2 divisors, whose sum is σ = 1630994412. Its totient is φ = 1630994410.

The previous prime is 1630994389. The next prime is 1630994483. The reversal of 1630994411 is 1144990361.

It is a weak prime.

It is an emirp because it is prime and its reverse (1144990361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630994411 - 2²² = 1626800107 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630994011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815497205 + 815497206.

It is an arithmetic number, because the mean of its divisors is an integer number (815497206).

Almost surely, 2^1630994411 is an apocalyptic number.

1630994411 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630994411 is an equidigital number, since it uses as much as digits as its factorization.

1630994411 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1630994411 is about 40385.5718171725. The cubic root of 1630994411 is about 1177.1111972531. Note that the first 4 decimals are identical.

The spelling of 1630994411 in words is "one billion, six hundred thirty million, nine hundred ninety-four thousand, four hundred eleven".