1822112181 has 24 divisors (see below), whose sum is σ = 2645618976. Its totient is φ = 1208449440.

The previous prime is 1822112167. The next prime is 1822112183. The reversal of 1822112181 is 1812112281.

It is a de Polignac number, because none of the positive numbers 2^k-1822112181 is a prime.

It is a super-2 number, since 2×1822112181² = 6640185600297153522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1822112183) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2667466 + ... + 2668148.

It is an arithmetic number, because the mean of its divisors is an integer number (110234124).

Almost surely, 2^1822112181 is an apocalyptic number.

It is an amenable number.

1822112181 is a deficient number, since it is larger than the sum of its proper divisors (823506795).

1822112181 is a wasteful number, since it uses less digits than its factorization.

1822112181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793 (or 1790 counting only the distinct ones).

The product of its digits is 512, while the sum is 27.

The square root of 1822112181 is about 42686.2059803867. The cubic root of 1822112181 is about 1221.4012791217.

It can be divided in two parts, 1822 and 112181, that added together give a triangular number (114003 = T₄₇₇).

The spelling of 1822112181 in words is "one billion, eight hundred twenty-two million, one hundred twelve thousand, one hundred eighty-one".