1811011112 has 16 divisors (see below), whose sum is σ = 3399283860. Its totient is φ = 904535424.

The previous prime is 1811011093. The next prime is 1811011121. The reversal of 1811011112 is 2111101181.

It can be written as a sum of positive squares in 2 ways, for example, as 1146093316 + 664917796 = 33854^2 + 25786^2 .

It is a super-2 number, since 2×1811011112² = 6559522495574953088, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 113303 + ... + 128294.

Almost surely, 2^1811011112 is an apocalyptic number.

It is an amenable number.

1811011112 is a deficient number, since it is larger than the sum of its proper divisors (1588272748).

1811011112 is a wasteful number, since it uses less digits than its factorization.

1811011112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242540 (or 242536 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

The square root of 1811011112 is about 42555.9762195629. The cubic root of 1811011112 is about 1218.9157956974.

Adding to 1811011112 its reverse (2111101181), we get a palindrome (3922112293).

The spelling of 1811011112 in words is "one billion, eight hundred eleven million, eleven thousand, one hundred twelve".