1920673 has 4 divisors (see below), whose sum is σ = 1926468. Its totient is φ = 1914880.

The previous prime is 1920671. The next prime is 1920679. The reversal of 1920673 is 3760291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3760291 = 1543 ⋅2437.

It can be written as a sum of positive squares in 2 ways, for example, as 1096209 + 824464 = 1047^2 + 908^2 .

It is a cyclic number.

It is not a de Polignac number, because 1920673 - 2¹ = 1920671 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1920671) 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 3 ways as a sum of consecutive naturals, for example, 2368 + ... + 3073.

It is an arithmetic number, because the mean of its divisors is an integer number (481617).

2^1920673 is an apocalyptic number.

It is an amenable number.

1920673 is a deficient number, since it is larger than the sum of its proper divisors (5795).

1920673 is an equidigital number, since it uses as much as digits as its factorization.

1920673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5794.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 1920673 is about 1385.8834727350. The cubic root of 1920673 is about 124.3038205381.

It can be divided in two parts, 192067 and 3, that multiplied together give a triangular number (576201 = T₁₀₇₃).

The spelling of 1920673 in words is "one million, nine hundred twenty thousand, six hundred seventy-three".