1921795 has 4 divisors (see below), whose sum is σ = 2306160. Its totient is φ = 1537432.

The previous prime is 1921789. The next prime is 1921813. The reversal of 1921795 is 5971291.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5971291 = 401 ⋅14891.

It is a cyclic number.

It is not a de Polignac number, because 1921795 - 2⁵ = 1921763 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1921795.

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, 192175 + ... + 192184.

It is an arithmetic number, because the mean of its divisors is an integer number (576540).

2^1921795 is an apocalyptic number.

1921795 is a deficient number, since it is larger than the sum of its proper divisors (384365).

1921795 is an equidigital number, since it uses as much as digits as its factorization.

1921795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384364.

The product of its digits is 5670, while the sum is 34.

The square root of 1921795 is about 1386.2882095726. The cubic root of 1921795 is about 124.3280206904.

The spelling of 1921795 in words is "one million, nine hundred twenty-one thousand, seven hundred ninety-five".