1881364 has 12 divisors (see below), whose sum is σ = 3310804. Its totient is φ = 935424.

The previous prime is 1881349. The next prime is 1881389. The reversal of 1881364 is 4631881.

It can be written as a sum of positive squares in 2 ways, for example, as 1192464 + 688900 = 1092^2 + 830^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 447 + ... + 1990.

2^1881364 is an apocalyptic number.

It is an amenable number.

1881364 is a deficient number, since it is larger than the sum of its proper divisors (1429440).

1881364 is a wasteful number, since it uses less digits than its factorization.

1881364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2634 (or 2632 counting only the distinct ones).

The product of its digits is 4608, while the sum is 31.

The square root of 1881364 is about 1371.6282295141. The cubic root of 1881364 is about 123.4499570508.

The spelling of 1881364 in words is "one million, eight hundred eighty-one thousand, three hundred sixty-four".