1894921 has 8 divisors (see below), whose sum is σ = 2174144. Its totient is φ = 1617840.

The previous prime is 1894913. The next prime is 1894931. The reversal of 1894921 is 1294981.

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

It is not a de Polignac number, because 1894921 - 2³ = 1894913 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (1894931) 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, 2626 + ... + 3268.

It is an arithmetic number, because the mean of its divisors is an integer number (271768).

2^1894921 is an apocalyptic number.

It is an amenable number.

1894921 is a deficient number, since it is larger than the sum of its proper divisors (279223).

1894921 is an equidigital number, since it uses as much as digits as its factorization.

1894921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071.

The product of its digits is 5184, while the sum is 34.

The square root of 1894921 is about 1376.5612954024. The cubic root of 1894921 is about 123.7457720557.

The spelling of 1894921 in words is "one million, eight hundred ninety-four thousand, nine hundred twenty-one".