1811130 has 32 divisors (see below), whose sum is σ = 4411584. Its totient is φ = 475776.

The previous prime is 1811119. The next prime is 1811141. The reversal of 1811130 is 311181.

1811130 = T₄₂ + T₄₃ + ... + T₂₂₁.

It is an interprime number because it is at equal distance from previous prime (1811119) and next prime (1811141).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1777 + ... + 2603.

It is an arithmetic number, because the mean of its divisors is an integer number (137862).

2^1811130 is an apocalyptic number.

1811130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1811130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2205792).

1811130 is an abundant number, since it is smaller than the sum of its proper divisors (2600454).

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

1811130 is a wasteful number, since it uses less digits than its factorization.

1811130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910.

The product of its (nonzero) digits is 24, while the sum is 15.

The square root of 1811130 is about 1345.7823003740. The cubic root of 1811130 is about 121.8942467960.

The spelling of 1811130 in words is "one million, eight hundred eleven thousand, one hundred thirty".