1968842 has 4 divisors (see below), whose sum is σ = 2953266. Its totient is φ = 984420.

The previous prime is 1968829. The next prime is 1968853. The reversal of 1968842 is 2488691.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2488691 = 439 ⋅5669.

It can be written as a sum of positive squares in only one way, i.e., 1825201 + 143641 = 1351^2 + 379^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1968796 and 1968805.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492209 + ... + 492212.

2^1968842 is an apocalyptic number.

1968842 is a deficient number, since it is larger than the sum of its proper divisors (984424).

1968842 is an equidigital number, since it uses as much as digits as its factorization.

1968842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 984423.

The product of its digits is 27648, while the sum is 38.

The square root of 1968842 is about 1403.1543037029. The cubic root of 1968842 is about 125.3344006121.

The spelling of 1968842 in words is "one million, nine hundred sixty-eight thousand, eight hundred forty-two".