1648963700 has 36 divisors (see below), whose sum is σ = 3584335692. Its totient is φ = 658464000.

The previous prime is 1648963681. The next prime is 1648963703. The reversal of 1648963700 is 73698461.

It can be written as a sum of positive squares in 6 ways, for example, as 6120676 + 1642843024 = 2474^2 + 40532^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1648963703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46382 + ... + 73818.

Almost surely, 2^1648963700 is an apocalyptic number.

1648963700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1648963700 is an abundant number, since it is smaller than the sum of its proper divisors (1935371992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1648963700 is a wasteful number, since it uses less digits than its factorization.

1648963700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28052 (or 28045 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 1648963700 is about 40607.4340484596. The cubic root of 1648963700 is about 1181.4183127558.

The spelling of 1648963700 in words is "one billion, six hundred forty-eight million, nine hundred sixty-three thousand, seven hundred".