2187920606 has 4 divisors (see below), whose sum is σ = 3281880912. Its totient is φ = 1093960302.

The previous prime is 2187920591. The next prime is 2187920627. The reversal of 2187920606 is 6060297812.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 546980150 + ... + 546980153.

It is an arithmetic number, because the mean of its divisors is an integer number (820470228).

Almost surely, 2^2187920606 is an apocalyptic number.

2187920606 is a deficient number, since it is larger than the sum of its proper divisors (1093960306).

2187920606 is a wasteful number, since it uses less digits than its factorization.

2187920606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1093960305.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 2187920606 is about 46775.2135858298. The cubic root of 2187920606 is about 1298.2067199089.

The spelling of 2187920606 in words is "two billion, one hundred eighty-seven million, nine hundred twenty thousand, six hundred six".