1961648 has 20 divisors (see below), whose sum is σ = 4093488. Its totient is φ = 905280.

The previous prime is 1961633. The next prime is 1961651. The reversal of 1961648 is 8461691.

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 3 ways as a sum of consecutive naturals, for example, 4508 + ... + 4923.

2^1961648 is an apocalyptic number.

It is an amenable number.

1961648 is an abundant number, since it is smaller than the sum of its proper divisors (2131840).

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

1961648 is a wasteful number, since it uses less digits than its factorization.

1961648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9452 (or 9446 counting only the distinct ones).

The product of its digits is 10368, while the sum is 35.

The square root of 1961648 is about 1400.5884477604. The cubic root of 1961648 is about 125.1815601596.

The spelling of 1961648 in words is "one million, nine hundred sixty-one thousand, six hundred forty-eight".