1694394 has 36 divisors (see below), whose sum is σ = 3982446. Its totient is φ = 520416.

The previous prime is 1694393. The next prime is 1694423. The reversal of 1694394 is 4934961.

It can be written as a sum of positive squares in 3 ways, for example, as 455625 + 1238769 = 675^2 + 1113^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1694393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2764 + ... + 3320.

2^1694394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1694394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1991223).

1694394 is an abundant number, since it is smaller than the sum of its proper divisors (2288052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1694394 is a wasteful number, since it uses less digits than its factorization.

1694394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591 (or 575 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 1694394 is about 1301.6889029257. The cubic root of 1694394 is about 119.2169851778.

The spelling of 1694394 in words is "one million, six hundred ninety-four thousand, three hundred ninety-four".