1894561 has 4 divisors (see below), whose sum is σ = 1901824. Its totient is φ = 1887300.

The previous prime is 1894489. The next prime is 1894577. The reversal of 1894561 is 1654981.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1894561 - 2⁹ = 1894049 is a prime.

It is a super-2 number, since 2×1894561² = 7178722765442, which contains 22 as substring.

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 (1897561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3225 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (475456).

2^1894561 is an apocalyptic number.

It is an amenable number.

1894561 is a deficient number, since it is larger than the sum of its proper divisors (7263).

1894561 is an equidigital number, since it uses as much as digits as its factorization.

1894561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7262.

The product of its digits is 8640, while the sum is 34.

The square root of 1894561 is about 1376.4305285775. The cubic root of 1894561 is about 123.7379350888.

The spelling of 1894561 in words is "one million, eight hundred ninety-four thousand, five hundred sixty-one".