1968750 has 84 divisors (see below), whose sum is σ = 6093672. Its totient is φ = 450000.

The previous prime is 1968749. The next prime is 1968751. The reversal of 1968750 is 578691.

It is an interprime number because it is at equal distance from previous prime (1968749) and next prime (1968751).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1968751) by changing a digit.

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 in 41 ways as a sum of consecutive naturals, for example, 281247 + ... + 281253.

2^1968750 is an apocalyptic number.

1968750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1968750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3046836).

1968750 is an abundant number, since it is smaller than the sum of its proper divisors (4124922).

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

1968750 is an frugal number, since it uses more digits than its factorization.

1968750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45 (or 17 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The square root of 1968750 is about 1403.1215200402. The cubic root of 1968750 is about 125.3324483741.

The spelling of 1968750 in words is "one million, nine hundred sixty-eight thousand, seven hundred fifty".