2182018404 has 12 divisors (see below), whose sum is σ = 5091376304. Its totient is φ = 727339464.

The previous prime is 2182018367. The next prime is 2182018409. The reversal of 2182018404 is 4048102812.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×2182018404² = 9522408630789414432, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2182018409) 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, 90917422 + ... + 90917445.

Almost surely, 2^2182018404 is an apocalyptic number.

It is an amenable number.

2182018404 is an abundant number, since it is smaller than the sum of its proper divisors (2909357900).

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

2182018404 is a wasteful number, since it uses less digits than its factorization.

2182018404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181834874 (or 181834872 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 2182018404 is about 46712.0798509336. The cubic root of 2182018404 is about 1297.0383078222.

The spelling of 2182018404 in words is "two billion, one hundred eighty-two million, eighteen thousand, four hundred four".