1961968 has 20 divisors (see below), whose sum is σ = 3883680. Its totient is φ = 959744.

The previous prime is 1961963. The next prime is 1961983. The reversal of 1961968 is 8691691.

It is a self number, because there is not a number n which added to its sum of digits gives 1961968.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1961963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553 + ... + 2056.

It is an arithmetic number, because the mean of its divisors is an integer number (194184).

2^1961968 is an apocalyptic number.

It is an amenable number.

1961968 is a deficient number, since it is larger than the sum of its proper divisors (1921712).

1961968 is a wasteful number, since it uses less digits than its factorization.

1961968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2664 (or 2658 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 1961968 is about 1400.7026807999. The cubic root of 1961968 is about 125.1883666681.

The spelling of 1961968 in words is "one million, nine hundred sixty-one thousand, nine hundred sixty-eight".