1648481650 has 12 divisors (see below), whose sum is σ = 3066175962. Its totient is φ = 659392640.

The previous prime is 1648481587. The next prime is 1648481651. The reversal of 1648481650 is 561848461.

It can be written as a sum of positive squares in 3 ways, for example, as 880249561 + 768232089 = 29669^2 + 27717^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1648481597 and 1648481606.

It is not an unprimeable number, because it can be changed into a prime (1648481651) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 16484767 + ... + 16484866.

Almost surely, 2^1648481650 is an apocalyptic number.

1648481650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1648481650 is a deficient number, since it is larger than the sum of its proper divisors (1417694312).

1648481650 is a wasteful number, since it uses less digits than its factorization.

1648481650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32969645 (or 32969640 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1648481650 is about 40601.4981250692. The cubic root of 1648481650 is about 1181.3031781813.

The spelling of 1648481650 in words is "one billion, six hundred forty-eight million, four hundred eighty-one thousand, six hundred fifty".