2186021484 has 18 divisors (see below), whose sum is σ = 5525776620. Its totient is φ = 728673816.

The previous prime is 2186021473. The next prime is 2186021489. The reversal of 2186021484 is 4841206812.

2186021484 is a `hidden beast` number, since 2 + 1 + 8 + 602 + 1 + 48 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 60722819 = 2186021484 / (2 + 1 + 8 + 6 + 0 + 2 + 1 + 4 + 8 + 4).

It is not an unprimeable number, because it can be changed into a prime (2186021489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30361374 + ... + 30361445.

It is an arithmetic number, because the mean of its divisors is an integer number (306987590).

Almost surely, 2^2186021484 is an apocalyptic number.

It is an amenable number.

2186021484 is an abundant number, since it is smaller than the sum of its proper divisors (3339755136).

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

2186021484 is a wasteful number, since it uses less digits than its factorization.

2186021484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60722829 (or 60722824 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 2186021484 is about 46754.9086620860. The cubic root of 2186021484 is about 1297.8309953328.

The spelling of 2186021484 in words is "two billion, one hundred eighty-six million, twenty-one thousand, four hundred eighty-four".