1994591 has 8 divisors (see below), whose sum is σ = 2085600. Its totient is φ = 1905120.

The previous prime is 1994569. The next prime is 1994599. The reversal of 1994591 is 1954991.

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 1994591 - 2¹⁸ = 1732447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1994599) 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, 2846 + ... + 3476.

It is an arithmetic number, because the mean of its divisors is an integer number (260700).

2^1994591 is an apocalyptic number.

1994591 is a deficient number, since it is larger than the sum of its proper divisors (91009).

1994591 is a wasteful number, since it uses less digits than its factorization.

1994591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769.

The product of its digits is 14580, while the sum is 38.

The square root of 1994591 is about 1412.2998973306. The cubic root of 1994591 is about 125.8784205586.

The spelling of 1994591 in words is "one million, nine hundred ninety-four thousand, five hundred ninety-one".