1981102 has 16 divisors (see below), whose sum is σ = 3070080. Its totient is φ = 958392.

The previous prime is 1981099. The next prime is 1981141. The reversal of 1981102 is 2011891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12073 + ... + 12235.

It is an arithmetic number, because the mean of its divisors is an integer number (191880).

2^1981102 is an apocalyptic number.

1981102 is a deficient number, since it is larger than the sum of its proper divisors (1088978).

1981102 is a wasteful number, since it uses less digits than its factorization.

1981102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 1981102 is about 1407.5162521264. The cubic root of 1981102 is about 125.5940153612.

Adding to 1981102 its reverse (2011891), we get a palindrome (3992993).

The spelling of 1981102 in words is "one million, nine hundred eighty-one thousand, one hundred two".