1893381 has 16 divisors (see below), whose sum is σ = 2985600. Its totient is φ = 1044288.

The previous prime is 1893377. The next prime is 1893391. The reversal of 1893381 is 1833981.

It is not a de Polignac number, because 1893381 - 2² = 1893377 is a prime.

It is a super-2 number, since 2×1893381² = 7169783222322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1893361) 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, 946 + ... + 2163.

It is an arithmetic number, because the mean of its divisors is an integer number (186600).

2^1893381 is an apocalyptic number.

It is an amenable number.

1893381 is a deficient number, since it is larger than the sum of its proper divisors (1092219).

1893381 is a wasteful number, since it uses less digits than its factorization.

1893381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3148.

The product of its digits is 5184, while the sum is 33.

The square root of 1893381 is about 1376.0018168593. The cubic root of 1893381 is about 123.7122402906.

It can be divided in two parts, 189 and 3381, that added together give a triangular number (3570 = T₈₄).

The spelling of 1893381 in words is "one million, eight hundred ninety-three thousand, three hundred eighty-one".