1811164 has 12 divisors (see below), whose sum is σ = 3198384. Its totient is φ = 897344.

The previous prime is 1811141. The next prime is 1811167. The reversal of 1811164 is 4611181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1811167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 2455.

It is an arithmetic number, because the mean of its divisors is an integer number (266532).

2^1811164 is an apocalyptic number.

It is an amenable number.

1811164 is a deficient number, since it is larger than the sum of its proper divisors (1387220).

1811164 is a wasteful number, since it uses less digits than its factorization.

1811164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4122 counting only the distinct ones).

The product of its digits is 192, while the sum is 22.

The square root of 1811164 is about 1345.7949323727. The cubic root of 1811164 is about 121.8950095571.

The spelling of 1811164 in words is "one million, eight hundred eleven thousand, one hundred sixty-four".