1920943 has 4 divisors (see below), whose sum is σ = 1924560. Its totient is φ = 1917328.

The previous prime is 1920923. The next prime is 1920959. The reversal of 1920943 is 3490291.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3490291 = 7 ⋅498613.

It is a cyclic number.

It is not a de Polignac number, because 1920943 - 2⁵ = 1920911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1920913) 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, 838 + ... + 2131.

It is an arithmetic number, because the mean of its divisors is an integer number (481140).

2^1920943 is an apocalyptic number.

1920943 is a deficient number, since it is larger than the sum of its proper divisors (3617).

1920943 is an equidigital number, since it uses as much as digits as its factorization.

1920943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3616.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 1920943 is about 1385.9808800990. The cubic root of 1920943 is about 124.3096449651.

The spelling of 1920943 in words is "one million, nine hundred twenty thousand, nine hundred forty-three".