1683381 has 16 divisors (see below), whose sum is σ = 2700800. Its totient is φ = 911088.

The previous prime is 1683373. The next prime is 1683397. The reversal of 1683381 is 1833861.

It is not a de Polignac number, because 1683381 - 2³ = 1683373 is a prime.

It is a super-2 number, since 2×1683381² = 5667543182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1711 + ... + 2508.

It is an arithmetic number, because the mean of its divisors is an integer number (168800).

2^1683381 is an apocalyptic number.

It is an amenable number.

1683381 is a deficient number, since it is larger than the sum of its proper divisors (1017419).

1683381 is a wasteful number, since it uses less digits than its factorization.

1683381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248.

The product of its digits is 3456, while the sum is 30.

The square root of 1683381 is about 1297.4517332063. The cubic root of 1683381 is about 118.9581332372.

The spelling of 1683381 in words is "one million, six hundred eighty-three thousand, three hundred eighty-one".