1899968 has 28 divisors (see below), whose sum is σ = 4309872. Its totient is φ = 814080.

The previous prime is 1899949. The next prime is 1899983. The reversal of 1899968 is 8699981.

It is a tau number, because it is divible by the number of its divisors (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1673 + ... + 2568.

It is an arithmetic number, because the mean of its divisors is an integer number (153924).

2^1899968 is an apocalyptic number.

It is an amenable number.

1899968 is an abundant number, since it is smaller than the sum of its proper divisors (2409904).

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

1899968 is an equidigital number, since it uses as much as digits as its factorization.

1899968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4260 (or 4250 counting only the distinct ones).

The product of its digits is 279936, while the sum is 50.

The square root of 1899968 is about 1378.3932675401. The cubic root of 1899968 is about 123.8555376259.

The spelling of 1899968 in words is "one million, eight hundred ninety-nine thousand, nine hundred sixty-eight".