1891795 has 12 divisors (see below), whose sum is σ = 2334096. Its totient is φ = 1471680.

The previous prime is 1891789. The next prime is 1891807. The reversal of 1891795 is 5971981.

It is a happy number.

It is not a de Polignac number, because 1891795 - 2⁷ = 1891667 is a prime.

It is an Ulam number.

It is a Duffinian number.

1891795 is a lucky number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25879 + ... + 25951.

It is an arithmetic number, because the mean of its divisors is an integer number (194508).

2^1891795 is an apocalyptic number.

1891795 is a deficient number, since it is larger than the sum of its proper divisors (442301).

1891795 is an frugal number, since it uses more digits than its factorization.

1891795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 149 counting only the distinct ones).

The product of its digits is 22680, while the sum is 40.

The square root of 1891795 is about 1375.4253887434. The cubic root of 1891795 is about 123.6776879170.

The spelling of 1891795 in words is "one million, eight hundred ninety-one thousand, seven hundred ninety-five".