2196187380 has 36 divisors (see below), whose sum is σ = 6661768932. Its totient is φ = 585649920.

The previous prime is 2196187373. The next prime is 2196187397. The reversal of 2196187380 is 837816912.

2196187380 is a `hidden beast` number, since 2 + 1 + 96 + 187 + 380 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1493513316 + 702674064 = 38646^2 + 26508^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6100341 + ... + 6100700.

It is an arithmetic number, because the mean of its divisors is an integer number (185049137).

Almost surely, 2^2196187380 is an apocalyptic number.

2196187380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2196187380 is an abundant number, since it is smaller than the sum of its proper divisors (4465581552).

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

2196187380 is a wasteful number, since it uses less digits than its factorization.

2196187380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12201056 (or 12201051 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 2196187380 is about 46863.4973086730. The cubic root of 2196187380 is about 1299.8397001557.

The spelling of 2196187380 in words is "two billion, one hundred ninety-six million, one hundred eighty-seven thousand, three hundred eighty".