1594 has 4 divisors (see below), whose sum is σ = 2394. Its totient is φ = 796.

The previous prime is 1583. The next prime is 1597. The reversal of 1594 is 4951.

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

It can be written as a sum of positive squares in only one way, i.e., 1369 + 225 = 37^2 + 15^2 .

It is an Ulam number.

It is a plaindrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (1597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 397 + ... + 400.

1594 is a deficient number, since it is larger than the sum of its proper divisors (800).

1594 is an equidigital number, since it uses as much as digits as its factorization.

1594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 799.

The product of its digits is 180, while the sum is 19.

The square root of 1594 is about 39.9249295554. The cubic root of 1594 is about 11.6814325509.

It can be divided in two parts, 159 and 4, that multiplied together give a palindrome (636).

The spelling of 1594 in words is "one thousand, five hundred ninety-four".