1811013030 has 48 divisors (see below), whose sum is σ = 4710756960. Its totient is φ = 482719104.

The previous prime is 1811013019. The next prime is 1811013049. The reversal of 1811013030 is 303101181.

It is a happy number.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1811012994 and 1811013012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345066 + ... + 350274.

It is an arithmetic number, because the mean of its divisors is an integer number (98140770).

Almost surely, 2^1811013030 is an apocalyptic number.

1811013030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1811013030 is an abundant number, since it is smaller than the sum of its proper divisors (2899743930).

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

1811013030 is a wasteful number, since it uses less digits than its factorization.

1811013030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9085 (or 9082 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 1811013030 is about 42555.9987545822. The cubic root of 1811013030 is about 1218.9162260058.

The spelling of 1811013030 in words is "one billion, eight hundred eleven million, thirteen thousand, thirty".