1811052 has 48 divisors (see below), whose sum is σ = 4821600. Its totient is φ = 587520.

The previous prime is 1811041. The next prime is 1811053. The reversal of 1811052 is 2501181.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (1811053) 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 in 15 ways as a sum of consecutive naturals, for example, 4224 + ... + 4632.

It is an arithmetic number, because the mean of its divisors is an integer number (100450).

2^1811052 is an apocalyptic number.

1811052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1811052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2410800).

1811052 is an abundant number, since it is smaller than the sum of its proper divisors (3010548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1811052 is a wasteful number, since it uses less digits than its factorization.

1811052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 18.

The square root of 1811052 is about 1345.7533206350. The cubic root of 1811052 is about 121.8924968962.

The spelling of 1811052 in words is "one million, eight hundred eleven thousand, fifty-two".