1630743650 has 12 divisors (see below), whose sum is σ = 3033183282. Its totient is φ = 652297440.

The previous prime is 1630743643. The next prime is 1630743701. The reversal of 1630743650 is 563470361.

It can be written as a sum of positive squares in 3 ways, for example, as 1217800609 + 412943041 = 34897^2 + 20321^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 1630743650.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16307387 + ... + 16307486.

Almost surely, 2^1630743650 is an apocalyptic number.

1630743650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1630743650 is a deficient number, since it is larger than the sum of its proper divisors (1402439632).

1630743650 is a wasteful number, since it uses less digits than its factorization.

1630743650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32614885 (or 32614880 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 35.

The square root of 1630743650 is about 40382.4671113591. The cubic root of 1630743650 is about 1177.0508682686.

The spelling of 1630743650 in words is "one billion, six hundred thirty million, seven hundred forty-three thousand, six hundred fifty".