1691342 has 16 divisors (see below), whose sum is σ = 2730240. Its totient is φ = 783288.

The previous prime is 1691321. The next prime is 1691359. The reversal of 1691342 is 2431961.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1313 + ... + 2259.

It is an arithmetic number, because the mean of its divisors is an integer number (170640).

2^1691342 is an apocalyptic number.

1691342 is a deficient number, since it is larger than the sum of its proper divisors (1038898).

1691342 is a wasteful number, since it uses less digits than its factorization.

1691342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1015.

The product of its digits is 1296, while the sum is 26.

The square root of 1691342 is about 1300.5160514196. The cubic root of 1691342 is about 119.1453629306.

The spelling of 1691342 in words is "one million, six hundred ninety-one thousand, three hundred forty-two".