1894745 has 4 divisors (see below), whose sum is σ = 2273700. Its totient is φ = 1515792.

The previous prime is 1894741. The next prime is 1894757. The reversal of 1894745 is 5474981.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 633616 + 1261129 = 796^2 + 1123^2 .

It is a cyclic number.

It is not a de Polignac number, because 1894745 - 2² = 1894741 is a prime.

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

It is a junction number, because it is equal to n+sod(n) for n = 1894699 and 1894708.

It is not an unprimeable number, because it can be changed into a prime (1894741) 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, 189470 + ... + 189479.

It is an arithmetic number, because the mean of its divisors is an integer number (568425).

2^1894745 is an apocalyptic number.

It is an amenable number.

1894745 is a deficient number, since it is larger than the sum of its proper divisors (378955).

1894745 is an equidigital number, since it uses as much as digits as its factorization.

1894745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378954.

The product of its digits is 40320, while the sum is 38.

The square root of 1894745 is about 1376.4973665067. The cubic root of 1894745 is about 123.7419407737.

The spelling of 1894745 in words is "one million, eight hundred ninety-four thousand, seven hundred forty-five".