1919968 has 12 divisors (see below), whose sum is σ = 3780000. Its totient is φ = 959968.

The previous prime is 1919959. The next prime is 1919987. The reversal of 1919968 is 8699191.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29968 + ... + 30031.

It is an arithmetic number, because the mean of its divisors is an integer number (315000).

2^1919968 is an apocalyptic number.

It is an amenable number.

1919968 is a deficient number, since it is larger than the sum of its proper divisors (1860032).

1919968 is an equidigital number, since it uses as much as digits as its factorization.

1919968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60009 (or 60001 counting only the distinct ones).

The product of its digits is 34992, while the sum is 43.

The square root of 1919968 is about 1385.6290990016. The cubic root of 1919968 is about 124.2886097382.

The spelling of 1919968 in words is "one million, nine hundred nineteen thousand, nine hundred sixty-eight".