1881268 has 6 divisors (see below), whose sum is σ = 3292226. Its totient is φ = 940632.

The previous prime is 1881263. The next prime is 1881277. The reversal of 1881268 is 8621881.

It can be written as a sum of positive squares in only one way, i.e., 1127844 + 753424 = 1062^2 + 868^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1881263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 235155 + ... + 235162.

2^1881268 is an apocalyptic number.

It is an amenable number.

1881268 is a deficient number, since it is larger than the sum of its proper divisors (1410958).

1881268 is a wasteful number, since it uses less digits than its factorization.

1881268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470321 (or 470319 counting only the distinct ones).

The product of its digits is 6144, while the sum is 34.

The square root of 1881268 is about 1371.5932341624. The cubic root of 1881268 is about 123.4478572626.

The spelling of 1881268 in words is "one million, eight hundred eighty-one thousand, two hundred sixty-eight".