1881416 has 8 divisors (see below), whose sum is σ = 3527670. Its totient is φ = 940704.

The previous prime is 1881403. The next prime is 1881419. The reversal of 1881416 is 6141881.

It can be written as a sum of positive squares in only one way, i.e., 1464100 + 417316 = 1210^2 + 646^2 .

It is a tau number, because it is divible by the number of its divisors (8).

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 as a sum of consecutive naturals, namely, 117581 + ... + 117596.

2^1881416 is an apocalyptic number.

It is an amenable number.

1881416 is a deficient number, since it is larger than the sum of its proper divisors (1646254).

1881416 is a wasteful number, since it uses less digits than its factorization.

1881416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235183 (or 235179 counting only the distinct ones).

The product of its digits is 1536, while the sum is 29.

The square root of 1881416 is about 1371.6471849568. The cubic root of 1881416 is about 123.4510944062.

The spelling of 1881416 in words is "one million, eight hundred eighty-one thousand, four hundred sixteen".