1881412 has 24 divisors (see below), whose sum is σ = 3591896. Its totient is φ = 857088.

The previous prime is 1881403. The next prime is 1881419. The reversal of 1881412 is 2141881.

It can be written as a sum of positive squares in 4 ways, for example, as 69696 + 1811716 = 264^2 + 1346^2 .

It is a super-2 number, since 2×1881412² = 7079422227488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1881419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4858 + ... + 5230.

2^1881412 is an apocalyptic number.

It is an amenable number.

1881412 is a deficient number, since it is larger than the sum of its proper divisors (1710484).

1881412 is a wasteful number, since it uses less digits than its factorization.

1881412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 485 counting only the distinct ones).

The product of its digits is 512, while the sum is 25.

The square root of 1881412 is about 1371.6457268552. The cubic root of 1881412 is about 123.4510069181.

It can be divided in two parts, 188 and 1412, that added together give a square (1600 = 40²).

The spelling of 1881412 in words is "one million, eight hundred eighty-one thousand, four hundred twelve".