1922885 has 4 divisors (see below), whose sum is σ = 2307468. Its totient is φ = 1538304.

The previous prime is 1922873. The next prime is 1922891. The reversal of 1922885 is 5882291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5882291 = 61 ⋅96431.

It can be written as a sum of positive squares in 2 ways, for example, as 198916 + 1723969 = 446^2 + 1313^2 .

It is a cyclic number.

It is not a de Polignac number, because 1922885 - 2⁶ = 1922821 is a prime.

It is a Duffinian number.

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, 192284 + ... + 192293.

It is an arithmetic number, because the mean of its divisors is an integer number (576867).

2^1922885 is an apocalyptic number.

It is an amenable number.

1922885 is a deficient number, since it is larger than the sum of its proper divisors (384583).

1922885 is an equidigital number, since it uses as much as digits as its factorization.

1922885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384582.

The product of its digits is 11520, while the sum is 35.

The square root of 1922885 is about 1386.6812899870. The cubic root of 1922885 is about 124.3515216240.

The spelling of 1922885 in words is "one million, nine hundred twenty-two thousand, eight hundred eighty-five".