1896905 has 8 divisors (see below), whose sum is σ = 2307912. Its totient is φ = 1496448.

The previous prime is 1896901. The next prime is 1896959. The reversal of 1896905 is 5096981.

It can be written as a sum of positive squares in 4 ways, for example, as 204304 + 1692601 = 452^2 + 1301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1896905 - 2² = 1896901 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1896901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2234 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (288489).

2^1896905 is an apocalyptic number.

It is an amenable number.

1896905 is a deficient number, since it is larger than the sum of its proper divisors (411007).

1896905 is an equidigital number, since it uses as much as digits as its factorization.

1896905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5275.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 1896905 is about 1377.2817431448. The cubic root of 1896905 is about 123.7889446518.

The spelling of 1896905 in words is "one million, eight hundred ninety-six thousand, nine hundred five".